Combine 6 cups water with the ginger, lemon shells, lemon juice, soy sauce, sugar, bay leaves, green onions, garlic, salt, black pepper, and crushed red pepper in a large heavy saucepan and bring to a boil over high heat.
Season the shrimp with the Essence and add to the boiling mixture. Cook for 2 minutes, remove from the heat, and steep for 2 minutes. Remove the shrimp with tongs or a slotted spoon and transfer to a large platter to cool. When cool enough to handle, serve, either warm, at room temperature, or chilled, with the Asian Mayonnaise.
Makes 6 to 8 appetizer servings