Bert's Superb Barbecue Sauce

This is the kind of homemade barbecue sauce that makes you wonder why anyone reaches for the bottle. Cider vinegar and ketchup form the backbone, butter rounds out the mouthfeel, and a thick lemon slice and a sliced onion simmer in the pot to layer fresh aromatic notes that bottled sauces can’t fake. The whole thing comes together fast and tastes nothing like what comes out of a jar.

The butter is the unusual ingredient that makes this sauce stand out. Most barbecue sauces are oil-free; the butter here adds richness, a glossy emulsion, and a Carolina-style sheen that clings to ribs and chicken better than thinner vinegar sauces. Don’t substitute oil; the milk solids in butter contribute flavor that shows up in the finished sauce.

A whole lemon slice plus a sliced onion are the secret ingredients. Both simmer in the sauce, releasing oils and aromatics, and get fished out before serving. The lemon brings a citrus brightness that complements the vinegar; the onion adds savory depth without the harsh raw bite of onion powder. Use real ones, not powders.

The author’s note in the recipe is worth following. Doubling the recipe and adding brown sugar produces a sweet-sour sauce that pairs beautifully with baby back ribs. The original tilts more vinegar-forward; the doubled-with-brown-sugar version tilts toward Kansas City style.

Apply this sauce in two stages when grilling. Brush it on during the last few minutes of cooking so the sugar doesn’t burn, and serve more on the side for dipping.

Pro Tips

• Simmer uncovered to concentrate the flavors. Covered simmering keeps the sauce thin and watery.
• Pull out the lemon and onion before storing or serving. Leaving them in causes the sauce to turn bitter from the lemon pith over a few days.
• Cool the sauce completely before bottling. Hot sauce in jars produces vacuum seals that can be hard to open later.
• The recipe makes a moderate batch. Plan to scale up if you’re making BBQ for a crowd, since this sauce disappears fast.

Variations

• Add a tablespoon of bourbon or smoked whiskey at the end for a deeper, smoky flavor.
• Stir in a teaspoon of liquid smoke for that authentic outdoor-pit taste without the pit.
• Toss in a few cloves of crushed garlic with the onion for extra savory depth.