Combine tomatoes, pepper, cucumber, onion and garlic in a blender. Blend at high speed until very smooth, at least 2 minutes, pausing occasionally to scrape down the sides with a rubber spatula.
32 oz Diced tomatoes, 1 ea Anaheim or other long green pepper, cored, seeded, and diced, 1 ea Cucumber, peeled and diced, 1 ea Onion, diced, 2 cloves Garlic