The night before, soak the rice with the water and leave overnight. Dump the rice and water with the salt into a medium-size pot and heat until boiling, then reduce heat until it simmers for 10 minutes with a lid in place. Place in a bowl and cover, cool. Spray a small, cup-like container with oil. Start layering with first sticky rice, avocado, imitation crab, cucumber and another layer of rice. Press into the container to have it bond so when you invert, it will stick together. I wet my hands with water to press the rice since, well, it was sticky! I flipped my little condiment cup and it came out great. The first one fell apart because I didn't press the layers tightly together before I flipped. Garnish with sesame seeds and mayo. One is perfect for an appetizer, three for a meal.