1. To prepare rice for this or any other sushi dish, rice must be pickled.

2. Combine vinegar and sugar in a enamel saucepan and bring to a boil.

3. Cook, stirring until sugar is completely dissolved. Remove from heat.

4. Stir 2 tablespoons of vinegar - sugar mixture into the cooked, still warm, rice.

5. Warm rice absorbs the mixture more completely.

6. Stir sesame seeds into rice.

7. Press pickled rice into a square on a small serving platter.

8. Cut rice into squares, and leave rice squares in place.

9. Press each square lightly so that rice clings, and place a small dab of Wasabi paste on each.

10. Press a bit of crabmeat, fish roe, and avocado on each square.