Shrimp Croquettes with Wasabi Aioli

Name: Shrimp Croquettes with Wasabi Aioli
Ingredients: Wasabi Aioli; 1 egg yolk; 1 cup canola oil; 1 garlic clove; 3 1/2 teaspoons wasabi powder; 1 heaping tbsp lemon juice; kosher salt; Shrimp Croquettes; 1 pound shrimp, peeled and deveined; 1 cup panko, plus extra for coating; 1 heaping tbsp chopped parsley; 4 scallions, white pale green parts only, finely diced; 1/4 teaspoon cayenne pepper; 1 egg; 1 lemon; canola oil for frying