Peel the tomatoes, cut them into quarters, and add them to a blender.

Peel the garlic cloves, remove the core to make them milder, and add to the blender.

Clean the green bell pepper, remove the seeds and white parts, cut into quarters, and add to the blender.

Peel the cucumber, cut into quarters, and add to the blender along with the peeled onion.

Adjust salt and vinegar to taste. Chill in the refrigerator for 1 hour.