Crab Cakes With Lemongrass Mayonnaise

Name: Crab Cakes With Lemongrass Mayonnaise
Ingredients: 1 cup canola oil; One 2-inch piece peeled fresh ginger, thinly sliced; 1 stalk of fresh lemongrass, bottom 4 inches only, thinly sliced; 1 tablespoon mirin; 1 tablespoon rice vinegar; 1 1/2 teaspoons dry mustard; 2 large egg yolks; Salt and freshly ground white pepper; 2 cups water; 1/2 cup sugar; 1/2 cup white wine vinegar; 1 teaspoon coriander seeds; 1/2 teaspoon mustard seeds; 1/4 teaspoon crushed red pepper; 1 bay leaf; 2 1/2 cups honeydew melon balls; 3 tablespoons minced scallions; 1 tablespoon finely chopped basil; 1 tablespoon finely chopped cilantro; 1 1/2 cups panko or coarse dry bread crumbs, plus more for coating; 1 pound lump crabmeat, picked over; 2 tablespoons unsalted butter; 2 tablespoons extra-virgin olive oil