Any serious BBQ enthusiast knows that BBQ sauce and rubs are not the only tools in your toolbox for keeping ribs moist and tender.
BBQ mop sauce was initially developed in Texas BBQ pits to continually baste barbequed meat while cooking or smoking over wood chips for long periods.
Many recipes are fiercely guarded secrets of the pitmaster, but our BBQ experts rounded up a couple of recipes and created a unique mop sauce to transform your ribs.
Summary of the Key Findings
- BBQ mop sauce is a spicy vinegar-based sauce used to baste ribs that are cooking low and slow or being smoked.
- BBQ mop sauce is made by simmering water, apple cider vinegar, hot sauce, cayenne pepper, and seasonings together.
It's worth using a spicy BBQ mop sauce while your meat is cooking to stop it from drying out, help build up layers of flavor on your pork ribs, and create a delicious crust outside.
BBQ mop sauce is even easier to make than barbeque sauce, and this recipe, inspired by Bobby Flay's North Carolina mop sauce (with some input from another award-winning BBQ expert), is simple to prepare .
Mop Sauce Recipe
Before you start cooking, you must realize that there's a massive difference between barbecue sauce and mop sauce.
Although both are flavorsome and add a sweet bite to your pulled pork, mop sauce has a thin and watery consistency.
This fluidity is crucial because you use it to baste meat, cooking, or long and low smoking so that the BBQ mop sauce penetrates to keep it moist, tender, and flavorsome.
As Meathead, a member of the BBQ Hall of Fame, explains, "The original [mop sauce] was probably just a kiss of hot peppers and vinegar, and some pitmasters use only those two ingredients to this day." 
The other mop sauce ingredients, such as red pepper flakes, help impart additional flavor to your ribs and keep them from drying out during the long cooking process.
You can add liquids like beer, fruit juice, or Worcestershire sauce, like Texan BBQ legend Walter Jettan, whose original recipe "made six quarts, enough to mop a whole cow." 
Also, add other herbs and spices, depending on the rub you used, so that the Carolina mop sauce adds to rather than rinses off the rub's flavors.
Brown sugar is also an essential component of mop sauce to add sweetness to the pulled pork.
The sugar won't burn because you're mopping meat over a relatively low temperature.
If you try to baste pork ribs with regular BBQ sauces, which have much more sugar, your sauce will burn. Always add the barbecue sauce towards the end of grilling or to serve.
This recipe for homemade mop sauce makes about five cups, enough for three cups for mopping and two for finishing and serving.
You can freeze any unused mop sauce for up to three months.
For a good selection of quality meat that goes with your mop sauce, check out my review on Butcherbox meat delivery.
Servings: 5 cups
Preparation time: 5 minutes
Cooking time: 10 minutes
- 4 ½ cups apple cider vinegar
- ¾ cup water
- 2 tablespoons light brown sugar
- 1/2 teaspoon cayenne powder
- 1 teaspoon garlic powder
- 1 tablespoon kosher salt
- 1 teaspoon freshly ground black pepper
- 2 tablespoons Tabasco sauce or 1 teaspoon red pepper flakes (or hot sauce of your choice – Texas Pete also works)
- 2 teaspoons dried mustard powder (optional)
- Pour the liquid ingredients (like the apple cider vinegar) into a saucepan, and then add the rest.
- Heat over medium heat, stirring gently until the salt dissolves.
- Bring the sauce to a simmer so that the sugar dissolves completely.
- Set aside the sauce to cool for storage or use immediately for mopping.
- Keep two cups of sauce in a bottle for serving at the table.
How To Use Mop Sauce
- Pour some mop sauces into a cup and use a mop to paint or dab it onto the meat. You can keep topping up the cup, but don't stick the mop directly into the pot of mop sauce – it can contaminate the cooked sauce with juices from the uncooked meat.
- Depending on how long you're cooking or smoking the ribs, you'll need to mop every 20 to 60 minutes.
- Keep the mop sauces on the meat, where it can be absorbed, and keep the meat moist. Mop sauce does nothing for the fat on the ribs.
- Add a stick of melted butter to your mop sauce for extra richness for the last hour. Alternatively, mop or baste with regular BBQ sauce.
- Discard any sauce you used with the mop as it is unsafe to eat.
What's The Best Tool For Mop Sauce?
What tool you mop with will depend on whether you have used a rub on your pulled pork or ribs.
- If you have used a rub on the ribs, you must ensure that your mop sauce doesn't wipe off. You can buy specialized mops for mop sauce that look like small kitchen floor mops ideal for light mopping. These cotton mops are washable, so you can reuse them after each BBQ. They come clean easily in soap and water, and air dry quickly.
- Another handy tool for mop sauce is a spray bottle that sprays the mop sauce, hardly disturbing your rub. Make sure you grind any spices thoroughly (like with a coffee grinder) so as not to clog the spray .
- Avoid silicone mops or brushes as they can't carry the thin mop sauce.
- You can baste more vigorously with a basting brush if you haven't used a rub. But as Bobby Flay says, there's no need for expensive BBQ equipment: "The pastry brushes that you find in home stores can be pricey, so pay a visit to your local hardware store and pick up a few paint brushes which are less expensive and work equally as well." 
Mop sauce is an essential element in barbequing or smoking ribs, as regular basting ensures that the ribs remain moist and tender throughout the long cooking process.
A simple vinegar mop sauce, spiced with Tabasco, is easy to make and use and complements the flavor of ribs.
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