Spicy Barbecue Sauce

Remove stem ends and cores from tomatoes. Cut tomatoes into quarters. Place tomato quarters in a 10- to 12-quart stainless-steel, enamel, or nonstick heavy pot (pot may be full). Cook, covered, over low to medium heat about 30 minutes or until tomatoes are soft. Stir in onions, celery, sweet peppers, jalapeño peppers, and garlic. Bring to boiling; reduce heat. Simmer, uncovered, for 30 minutes.

Press tomato mixture through a food mill. Discard seeds and skins. Measure 19 cups tomato mixture; return to pot. Measure the depth of the mixture with a ruler. Bring to boiling; reduce heat. Simmer, uncovered, for 1 to 1 1/2 hours or until mixture is reduced by half, stirring occasionally. (Measure depth again with a ruler; should be half of original depth.)

Stir in vinegar, brown sugar, Worcestershire sauce, salt, dry mustard, paprika, and black pepper. Simmer, uncovered, about 1 hour more or until mixture reaches desired consistency, stirring frequently.

Ladle hot sauce into hot sterilized half-pint and/or pint canning jars, leaving a 1/2-inch headspace. Wipe jar rims; adjust lids and screw bands.

Process filled jars in a boiling-water canner for 20 minutes (start timing when water returns to boiling). Remove jars from canner; cool on wire racks. Makes 4 to 5 pints or 9 half-pints.