The day before making the soup, place almonds in a bowl, cover with tap water and soak overnight. Next day, cut the crusts from the bread and discard, then cut bread into 2cm cubes. Cover bread with tap water and soak for at least two hours. Drain almonds and place in a food processor. Squeeze excess water out of bread and add to food processor with the garlic and salt. Blend, adding chilled water a little at a time to create a thick almond milk. To avoid a gritty soup, filter the milk through a very fine sieve twice without pushing it through. Add garlic mayonnaise to a medium-size stainless steel bowl. Gently whisk in almond milk a little at a time until all incorporated. Pour soup into chilled bowls and sprinkle with vinegar. Add small amounts of crab and a few grapes to each bowl.

* This recipe first appeared in Spectrum magazine (Sydney Morning Herald).