Vegan California Roll with Avocado Wasabi

Name: Vegan California Roll with Avocado Wasabi
Ingredients: Vegan California Roll Ingredients:; 1/2 cup short-grain rice; 1 Tbsp. rice vinegar; 1 can (14-oz. each) hearts of palm, drained; 1 Tbsp. vegan mayonnaise; 1/2 tsp. low-sodium Old Bay® seasoning; 3 1/4 sheets nori; 3/4 ripe, Fresh California Avocado, seeded, peeled and sliced; 1/2 cucumber, sliced into thin matchsticks; 1/2 tsp. water, divided; 1/2 cup Avocado Wasabi Sauce (see make-ahead recipe below); Avocado Wasabi Sauce:; 1/2 ripe, Fresh California Avocado, seeded and peeled; 1/4 cup water, plus more as needed; 1/2 tsp. wasabi powder, to taste; 1/4 tsp. garlic powder; 1/8 tsp. salt, to taste; 1/8 tsp. pepper, to taste