Prepare All the Vegetables:
Peel watermelon and cut flesh into rough chunks, removing all rind completely
Roughly chop ripe tomatoes
Remove seeds and membrane from red bell pepper half and roughly chop
Roughly chop sweet onion quarter
No precise cutting needed - everything will be pureed smooth
Blend Until Smooth:
Place watermelon chunks, chopped tomatoes, red bell pepper, and sweet onion into high-powered blender
Add extra virgin olive oil, Sherry vinegar, generous pinch of salt, and few grinds of black pepper
Blend on high speed for full 60-90 seconds until completely smooth
Blend thoroughly to emulsify olive oil into soup
Strain for Smoother Texture:
Pour blended soup through fine-mesh sieve or strainer into large bowl or pitcher
Use back of spoon or rubber spatula to press mixture through strainer
Extract as much liquid as possible, leaving fibrous solids behind
This straining creates characteristic silky, smooth texture
Skip or reduce straining if you prefer slightly more textured gazpacho
Taste and Adjust Seasoning:
Before refrigerating, taste strained gazpacho
Add more salt to bring out sweetness of watermelon and savory depth of tomato
Add more Sherry vinegar for additional brightness and acidity (should be noticeable but not sharp)
Add small additional drizzle of olive oil if soup tastes flat
Refrigerate:
Cover bowl or pitcher tightly with plastic wrap or lid
Refrigerate for minimum of 1 hour
Chilling serves two functions: properly cold temperature and allows flavors to meld
Soup tastes better at 1-hour mark than immediately after blending
Even better after 2-3 hours or overnight
Serve with Optional Toppings:
Pour chilled gazpacho into bowls or glasses
If using toppings, add small mound of finely diced fresh watermelon cubes in center of each bowl
Scatter few fresh basil leaves over top
Add small amount of finely diced red onion for color and sharp bite
Finish with drizzle of good extra virgin olive oil over each serving
Serve immediately while properly cold
Critical Tips:
Use ripest, sweetest watermelon and most flavorful tomatoes available (quality is entire flavor foundation)
Blend for full 60-90 seconds for proper emulsification
Don't skip straining step for truly silky texture
Taste and adjust seasoning before refrigerating (cold mutes flavors slightly)
Refrigerate for full hour minimum
Add optional toppings only immediately before serving
Serving Suggestions: Serve in wide, shallow bowls for elegant presentation. For parties, serve in small shot glasses or cups as amuse-bouche. For summer lunch, serve with crusty sourdough bread and arugula salad. Can also be served in small glass pitcher for brunch or frozen in popsicle molds for nutritious frozen treat.