Place bread cubes, cold water, almonds, garlic, vinegar, salt and pepper in a blender and blend until completely smooth.
Place the blender on medium-low and slowly stream in the olive oil (or add a little at a time), blending til creamy, smooth, and emulsified.
Taste and adjust salt and vinegar to taste.
Serve in bowls and garnish with green grapes (traditional), grape tomatoes, or figs, a drizzle of olive oil, and a sprinkling of pepper.
