St Louis style sauce and rub

In a saucepan add puree, salt, water, vinegar, onions, sugar, pepper, and garlic.

Bring to a boil, turn down to a simmer and simmer 20 minutes. Use now or refrigerate.

When you go to use the sauce, mix the mustard and salt together. Rub on the meat before adding sauce, and before cooking.

This is enough for 1 slab of St Louis style ribs.