Prepare the Vegetables: Core and roughly chop the tomatoes. Peel and chop the cucumber, then seed and chop the red bell pepper. Roughly chop the red onion and peel the garlic. This initial preparation ensures that all the vegetables are ready for blending, allowing for a smoother texture in the final soup.

Soften the Bread: Place the torn bread in a large bowl. Add several spoonfuls of juice from the chopped tomatoes and let it stand for 5 minutes. The bread should soften completely without becoming soupy. This step is crucial as it helps the bread integrate smoothly into the gazpacho, contributing to its creamy texture.

Load the Blender: Add the tomatoes, cucumber, bell pepper, red onion, garlic, and softened bread to a 64-ounce (1.9 L) blender. If the ingredients do not fit comfortably, blend the vegetables in two batches and combine them afterward. Proper loading of the blender ensures even blending and a consistent texture.

Begin Blending: Blend on low speed for 20 to 30 seconds, then increase to high. Blend for 1 to 2 minutes, until the vegetables are fully broken down and the mixture looks smooth and evenly colored. This step is essential for achieving the desired creamy consistency of the gazpacho.

Add the Oil and Seasonings: With the blender running on medium speed, slowly pour in the olive oil. Add the sherry vinegar, salt, black pepper, and cold water. Adding the oil gradually helps it emulsify with the vegetable juices, enhancing the flavor and texture of the soup.

Blend Until Creamy: Continue blending on high for another 30 to 60 seconds. The gazpacho should look smooth, slightly creamy, and pourable. It should coat a spoon lightly without resembling a thick puree. This step ensures that the gazpacho has a pleasant mouthfeel when served.

Adjust the Consistency: If the soup is thicker than desired, add additional cold water 1 tablespoon (15 ml) at a time. Blend briefly after each addition. Avoid adding too much water, which can dilute the tomato flavor. Adjusting the consistency is key to achieving the perfect texture for serving.

Strain if Desired: For an especially smooth gazpacho, pour the soup through a fine-mesh strainer into a large bowl, pressing gently with a spatula. Discard the remaining skins and seeds. Skip this step for a more rustic texture. Straining can enhance the smoothness but is optional based on personal preference.

Taste and Adjust: Taste the soup before chilling: It should taste slightly more acidic and seasoned than you want the finished soup because cold temperatures soften flavor. Add a small amount of extra vinegar or salt only if needed. This step is important to ensure the flavors are balanced before serving.

Chill Thoroughly: Transfer the gazpacho to an airtight container. Refrigerate for at least 2 hours, until completely cold. Stir well before serving because slight separation is normal. Chilling allows the flavors to meld and develop, enhancing the overall taste of the gazpacho.

Prepare the Garnishes: Shortly before serving, finely dice the optional cucumber and tomato. Keep the pieces small so they are easy to eat with a spoon. Preparing garnishes in advance ensures a beautiful presentation when serving the gazpacho.

Serve: Ladle the cold gazpacho into bowls or glasses. Top with diced cucumber, diced tomato, parsley, and a light drizzle of olive oil as desired. Serving the gazpacho well chilled with fresh garnishes adds texture and visual appeal to the dish.