Awhile ago someone asked about tomatoless catsup.
Banana-based catsup is available in some Asian food markets.

Here are a couple recipes for tomato analogs (I haven’t tried them).

Un-Tomato Ketchup
from Of These Ye May Freely Eat by JoAnn Rachor

Blend until smooth:
1 C. cooked carrots
1/4 C. cooked beets
1/4 C. water
1/4 C. lemon juice
1 T. sweetener of your choice
1/2 tsp. salt
1/2 tsp. onion powder
1/4 tsp. garlic powder
1/8 tsp. oregano

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