Red Wine Vinegar
Red Wine Vinegar is an acidic cooking liquid used for brightness and balance. Add gradually and taste as you go, especially near the end of cooking.
Identity
Acidic liquid
Add gradually to balance the dish.
Acid changes a dish quickly. Add a little, taste, and adjust near the end so the flavor stays bright without turning sharp.
Reference image
Red Wine Vinegar reference image.

Source: Wikimedia Commons
Used In Recipes
Substitutions
White Wine Vinegar -> Red Wine Vinegar
2 tablespoons white wine vinegar or red wine vinegar
The source lists this as an alternative in the same ingredient row.
Source: Classic Panzanella Salad (Tuscan-Style Tomato and Bread Salad)
Red Wine Vinegar -> Lime Juice
3 tablespoons red wine vinegar or lime juice
The source lists this as an alternative in the same ingredient row.
Source: Cowboy Caviar
Sherry Vinegar -> Red Wine Vinegar
1 to 2 teaspoons sherry vinegar or red wine vinegar or lime juice, to taste
The source lists this as an alternative in the same ingredient row.
Source: Homemade Vegetarian Chili