Sauces & Condiments
This au sauce recipe transforms simple ingredients into a velvety, aromatic sauce that elevates any protein or vegetable. The secret lies in a slow reduction of wine, broth, and tomatoes, creating a deep, smoky richness with a fresh herb finish that ties everything together.
I developed this recipe after years of refining classic French techniques—now you can achieve restaurant-quality results at home.
The sauce begins with a delicate balance of white wine and beef broth, simmered until reduced to a syrupy consistency. A touch of tomato paste adds depth, while butter and fresh herbs like thyme and parsley lend brightness.
The key is patience—letting the sauce develop slowly on the stove ensures layers of flavor without overpowering the dish.
What you’ll end up with is a versatile au sauce that works beautifully with steak, chicken, or even roasted vegetables. Its rich yet balanced profile makes it perfect for drizzling over grilled meats or using as a base for creamy pasta dishes.
The sauce keeps well in the fridge for up to a week, so you can make a batch ahead for effortless weeknight dinners.
This recipe is all about simplicity and depth—no complicated techniques, just a few high-quality ingredients combined in the right way. Whether you’re cooking for a special occasion or a quick weeknight meal, this au sauce will add a touch of elegance to your table.
Ingredients for au sauce
Nine simple ingredients create a restaurant-worthy au sauce with smoky depth and fresh herb brightness.
| Ingredient | Amount | Notes |
|---|---|---|
| Dry White Wine 🍷 | ½ cup | Dry and medium-bodied preferred |
| Beef Broth 💧 | 1 cup | Homemade or quality low-sodium |
| Tomato Paste 🍅 | 2 tbsp | Smooth, no sugar added |
| Unsalted Butter 🧈 | ½ cup | Cold, cubed for finishing |
| Fresh Thyme Leaves 🌿 | 1 tbsp | Or 1 tsp dried thyme |
| Fresh Parsley Leaves 🌿 | ¼ cup | Chopped, for bright finish |
| Garlic Cloves 🧄 | 3 cloves | Minced, for aromatic base |
| Shallots 🧅 | 2 whole | Or 2 tbsp minced onion |
| Olive Oil 🫒 | 2 tbsp | Extra-virgin for richness |
| Salt 🧂 | ½ tsp | Kosher or sea salt |
| Black Peppercorns 🌶️ | ¼ tsp | Freshly cracked preferred |
The wine and broth are your flavor foundation—dry white wine like Sauvignon Blanc or Pinot Grigio works best, but save the good stuff. Trader Joe's or Whole Foods have solid options for affordable bottles. If you're using store-bought broth, go for the low-sodium kind—you can always add more salt later. The tomato paste? San Marzano is ideal, but any smooth, sugar-free paste will do. Fresh thyme and parsley make all the difference—farmers markets usually have the freshest, but grocery store bunches work too if you use them fast.
No white wine? Dry vermouth or apple cider vinegar can stand in, but you'll lose some complexity. Swapping beef broth for vegetable broth keeps it vegetarian-friendly. If you're short on shallots, yellow onion works fine—just use twice the amount. The butter is for finishing, so don't melt it ahead of time. That last touch of cold butter gives the sauce that silky, velvety finish. For a smokier version, add a pinch of smoked paprika when you stir in the tomato paste.
This sauce keeps beautifully—up to 1 week in the fridge, covered with plastic wrap pressed right on the surface. For longer storage, freeze in ice cube trays and transfer to a bag. Thaw overnight in the fridge or warm gently on the stove. The sauce actually improves after a day or two as the flavors meld. Double the batch—it disappears fast when drizzled over steak or chicken. I always make extra to toss with roasted veggies or use as a pasta sauce base.
Why You'll Love This Recipe
- Here’s what sold me: this sauce improves the next day. The wine mellows, the flavors meld, and reheating it is just about dumping it back in a pan. I make double batches on Sundays, freeze half, and thank my future self later. Zero waste, maximum flavor.
- Pantry Magic: I swear by this sauce because it uses stuff I already have—no last-minute grocery runs. That bottle of white wine gathering dust? Perfect. The beef broth I always keep stocked? Even better. Just toss them in with the tomato paste and butter, and suddenly, dinner feels fancy.
- Thyme for Adventure: Honestly, the thyme leaves take this sauce from "good" to "I’d eat this every night." That bright, herby note cuts through the richness of the butter and wine, leaving you with a flavor that’s bold but balanced—like a hug for your taste buds.
- Weeknight to Dinner Party: Between us, this sauce works for everything. Drizzle it over steak for a restaurant-worthy meal, or toss it with roasted veggies when I’m too tired to think. Even my picky-eating partner asks for seconds—proof it’s a crowd-pleaser without trying too hard.
Step-by-step instructions for smoky tomato sauce with fresh herb finish
This sauce delivers restaurant-quality depth with just a few simple techniques.
Build the Flavor Base with Shallots and Garlic
Heat the 2 tablespoons olive oil in a medium saucepan over medium-low heat. Add the 2 whole shallots, peeled and thinly sliced, and cook for 5-6 minutes until they become soft and translucent but not browned. You want them to melt into the oil without releasing any bitterness.
Add the 3 cloves garlic, minced, and cook for another 30 seconds until fragrant. Watch closely—garlic burns quickly. If it starts to turn golden, reduce the heat slightly. This aromatic base forms the foundation of your sauce, so take your time here. The shallots should be completely tender with no crunch remaining.
Develop Depth with Tomato Paste and Wine
Increase the heat to medium and stir in the 2 tablespoons tomato paste, spreading it evenly around the pan. Cook for 1-2 minutes until it darkens slightly and releases its deep, concentrated flavor. This step is crucial—it prevents a raw taste in your finished sauce.
Pour in the ½ cup dry white wine and scrape up any browned bits from the bottom of the pan with a wooden spoon. This deglazing step captures all the flavor you've built so far. Let the wine simmer for 2-3 minutes until it reduces by about half. You'll notice the alcohol smell dissipating as it cooks off.
Simmer with Broth and Seasonings
Add the 1 cup beef broth, ½ teaspoon salt, and ¼ teaspoon black peppercorns. Bring to a gentle simmer, then reduce heat to low and let it cook uncovered for 15-20 minutes. Stir occasionally to prevent sticking. The sauce should thicken slightly as it reduces, developing a rich, smoky character.
Real talk: This is where patience pays off. The longer you simmer, the more developed the flavors become. You're looking for a sauce that coats the back of a spoon but isn't gluey. If it thickens too much, you can add a splash of water later—just don't rush this step.
Finish with Fresh Herbs and Butter
Remove the pan from heat and stir in the 1 tablespoon fresh thyme leaves and ¼ cup chopped fresh parsley leaves. Let the herbs steep in the warm sauce for 2-3 minutes, then strain if you prefer a smoother texture. The herbs will brighten the sauce and cut through the richness.
Return the pan to low heat and add the ½ cup cold unsalted butter, cubed. Stir constantly until the butter melts completely and emulsifies into the sauce, creating a velvety finish. This final step adds body and richness that makes the sauce truly special. The sauce should be glossy with a beautiful, even color.
Pro Tips For Making Au Sauce
- DEGLAZE HOT: Don’t let the wine sit in your pan—hit it with a splash of beef broth immediately after pouring in the white wine. The alcohol burns off faster when the pan is still hot, and you’ll get deeper flavor instead of that sharp, undercooked wine taste. I used to wait, and the sauce always tasted raw.
- SWEAT THE THYME: Toss fresh thyme leaves in the pan with the tomato paste before adding liquid—this releases their oils and aroma right into the sauce. Skip the stems unless you’re making a fancy garnish (they’re tough and add bitterness). A quick pinch of salt here too, since thyme’s flavor needs a little boost from the butter.
- CONTROL THE BUTTER: Whisk in the unsalted butter slowly at the end, one pat at a time, or you’ll end up with a greasy mess. If the sauce thickens too much, splash in a teaspoon of broth to loosen it—better than scraping burnt bits off the bottom. And yes, even if you’re impatient like me.
- SALT THE BROTH: Taste your beef broth before adding it to the sauce—if it’s unsalted, it’ll make your final dish taste flat. A quick pinch (about ¼ teaspoon per cup) now saves you from over-salting later. I learned this the hard way after ruining a batch by assuming store-bought broth was seasoned.
Essential equipment for this recipe
Saucepan Essentials
Start with a medium saucepan that has a flat bottom—this ensures even heat distribution. I swear by my All-Clad stainless steel pan because it heats up quickly and maintains consistent temperatures.
For budget-friendly options, a Calphalon nonstick pan works well, though I avoid nonstick for long reductions since it can degrade over time. The pan should have 2-3 quart capacity to give your sauce room to develop without spilling over. 🔥
Wooden Spoons
Never use metal utensils when stirring your au sauce—wooden spoons are a must. They won’t scratch your pan or react with acidic ingredients like wine and tomato paste. My go-to is a Oxo Good Grips wooden spoon with a silicone handle for comfort.
The slightly curved shape makes it easy to scrape up those flavorful browned bits from the bottom of the pan during deglazing. Keep it handy while you cook.
Fine-Mesh Strainer
A fine-mesh strainer helps achieve that silky-smooth texture if you prefer your sauce without herb bits. I use a Heston Blumenthal-designed strainer from Le Creuset—it’s durable and does an excellent job. For a quicker option, a collapsible metal mesh strainer works too.
If you’re keeping the herbs in, just stir them in and let them infuse before removing the pan from heat. The choice is yours!
Kitchen Timer
Timing is everything when reducing sauces, so a kitchen timer is non-negotiable. I love the OXO Good Grips digital timer because it’s easy to read and has a loud alarm. Set it for 15-20 minutes during the simmering phase to avoid over-reducing.
Pro tip: Place the timer near your stove so you don’t miss the alert while stirring. Overcooking can turn your rich sauce into a sticky mess.
Chef’s Knife
A sharp chef’s knife is essential for mincing garlic and shallots to the perfect consistency. I rely on my Wüsthof Classic—it’s heavy enough to handle tougher tasks but precise enough for delicate prep work. For shallots, slice them thinly to ensure they cook down evenly.
If you’re short on time, a microplane works for garlic, but a knife gives you more control over the texture. Keep your knife sharp to make prep a breeze. ✨
Measuring Spoons
Precision matters when measuring ingredients like tomato paste, thyme, and salt. I use stainless steel measuring spoons from OXO because they’re durable and easy to read.
For the 2 tablespoons tomato paste, use a small rubber spatula to scrape every last bit from the container—those leftover traces add up! Invest in a set with clear markings for accuracy, especially when working with small quantities like ¼ teaspoon black peppercorns.
Nutrition facts
Frequently asked questions
What's the best white wine to use in this au sauce?
Look for a dry, medium-bodied white wine like Sauvignon Blanc or Pinot Grigio—these provide bright acidity that balances the richness. Avoid sweet wines like Riesling or Moscato, as they'll make your sauce taste cloying. If you're using a budget option, Trader Joe's or Whole Foods carry excellent affordable choices. Remember, you're cooking off most of the alcohol anyway!
Can I make this au sauce vegetarian?
Simply swap the beef broth for vegetable broth and use a vegetarian butter substitute if needed. The flavor profile will still shine—just expect slightly less depth. For extra umami, add 1 teaspoon soy sauce or mushroom powder during the simmering phase. The sauce will work beautifully with roasted vegetables or tofu dishes.
Why did my sauce turn out too thick?
This usually happens when the sauce reduces too much during simmering. To fix it, remove the pan from heat and whisk in 1-2 tablespoons warm water or broth until you reach your desired consistency. The key is patience—simmer uncovered at low heat and stir occasionally. If it gets too thick, you can always thin it later, but you can't un-reduce a watery sauce!
How can I use this au sauce beyond meat dishes?
This versatile sauce works beautifully with roasted vegetables, pasta, or even as a dipping sauce for crusty bread. Try drizzling it over grilled portobello mushrooms or using it as a base for creamy risotto. For a quick weeknight meal, toss it with penne pasta and fresh spinach. The rich, herby flavor complements both hearty and delicate dishes equally well.
Can I make this sauce ahead of time?
Yes! This sauce actually improves with time—flavors meld beautifully when refrigerated. Store it in an airtight container for up to 1 week in the fridge. For longer storage, freeze in ice cube trays and transfer to a bag. Thaw overnight in the fridge or warm gently on the stove. The sauce thickens slightly when chilled, so you may need to add a splash of water when reheating.