Make this recipe a recipe that people in that category can eat. categories: ['vegetarian'], recipe: (if you use a food processor, you will no doubt have the perfect mayonnaise--a mixing bowl takes more effort.) place all ingredients, except the oil, in the food processor. start the motor. slowly, drip by drip, add the oil. once an emulsion starts (it starts to thicken), you can add the oil more generously. adjust seasonings--more salt, pepper, lemon. this will last 5-7 days in the refrigerator.

Target recipe: whizz 1/4 cup of the vegetable oil with the egg, lemon juice, dry mustard and salt in a blender for a few seconds. slowly drizzle the remaining 3/4 cup of vegetable oil into the mixture (through the top hatch) while the blender is running. finally, blend in the hot water. refrigerate until use.