To make sushi in Grow a Garden on Roblox, you need to use the Cooking Pot located in the middle of the island with specific ingredients depending on the sushi tier you want to make. Here are example recipes:

• Rare Sushi: 4 Bamboo + 1 Corn
• Mythical Sushi: 3 Ember Lily + 1 Bamboo + 1 Corn
• Divine Sushi: 3 Bone Blossom + 1 Bamboo + 1 Corn

To cook sushi, equip each ingredient, interact with the Cooking Pot to add them, then press the Cook button. After cooking, collect the sushi dish and give it to Chris P. Bacon if he's craving it to receive rewards. More advanced sushi recipes also exist with different ingredients for Legendary and Prismatic sushi tiers, but the above gives a basic guide to get started making sushi in the game.