Place roughly cut cucumber into the food processor and pulse until coarsely chopped. Remove the chopped cucumber and add it to a separate bowl. Next, repeat the process with the sweet onion and garlic. Add onions to the cucumber mixture. Place half the tomatoes in the food processor and pulse until the texture is coarse and choppy. Add it to the cucumber and onion mixture. Next, process the remaining tomatoes, lime juice, vinegar, olive oil, salt, and peppers until smooth. Place the ingredients into the bowl with the cucumber, onion, garlic, and tomato. Add in the minced jalapeño if using. Stir the mixture, then cover and place in the refrigerator for at least 4 hours or overnight. Once completely chilled, serve with chopped cilantro or microgreens and cubed avocado on top. Enjoy!