Prepare the Vegetables: Place the tomatoes, cucumber, bell peppers, red onion, and garlic into a blender or food processor. You can also roughly chop the vegetables first if you prefer a chunkier texture later.
Blend: Add the soaked bread, olive oil, vinegar, salt, black pepper, and cumin (if using) to the blender with the vegetables. Blend until smooth. If you like a finer texture, blend longer.
Adjust Consistency: Add the cold water a little at a time and blend until you reach your preferred consistency. Some prefer their gazpacho thicker, while others like it more liquid. Taste and adjust the seasoning as needed with more salt or vinegar.
Chill:Transfer the gazpacho to a bowl or pitcher. Cover and refrigerate for at least 1-2 hours, or until fully chilled. This step is important to allow the flavors to meld.
Serve:Serve the gazpacho cold in bowls. Garnish with chopped cucumber, diced tomatoes, croutons, or an extra drizzle of olive oil for added texture and flavor.