In a medium bowl, whisk together egg yolk, vinegar, lemon juice, mustard, and hot sauce until combined. Add oil in a slow, steady stream, whisking constantly, until combined. Stir in cheese, zest, salt, and pepper.
Notes
Note: According to the USDA, people with health problems, the very young, the elderly, and pregnant women should avoid eating foods containing raw eggs. Pasteurized eggs can be substituted, if necessary.
Recipe by Louisiana Cookin' at https://louisianacookin.com/grilled-romaine-and-crab-salad/