Making your own ketchup may seem a bit over-the-top, but we promise it's worth it. It's easy to do, and homemade is so much more delicious than supermarket varieties, which are loaded with corn syrup.
Ketchup can be chilled up to 3 weeks.
Recipe information
Total Time
3 hours
Yield
Makes about 2 cups
Ingredients
Preparation
Step 1
Purée tomatoes (with purée from can) in a blender until smooth.
Step 2
Cook onion in oil in a 4-quart heavy saucepan over moderate heat, stirring, until softened, about 8 minutes. Add puréed tomatoes, tomato paste, brown sugar, vinegar, and salt and simmer, uncovered, stirring occasionally, until very thick, about 1 hour (stir more frequently toward end of cooking to prevent scorching).
Step 3
Purée ketchup in 2 batches in blender until smooth (use caution when blending hot liquids). Chill, covered, at least 2 hours (for flavors to develop).