Combine the cucumbers, cilantro, crushed garlic, green onions and lime juice in a blender or food processor. Blend or pulse until you have the desired consistency – some people like it chunkier and others prefer a smoother mix. Add a ripe avocado (peeled and seed removed) for an extra creamy version.
Taste and add salt if desired. For best flavor, chill the soup for 1-2 hours before serving. Mix it well before serving.
Serve with croutons or garlic toast, pickled red onions, a drizzle of olive oil, and cilantro leaves. Other topping options include smoked salmon, crème fraiche, etc.