A 12 ounce bottle of mustard would last me, personally, 2 or 3 years, depending upon how often I eat a hot dog or make potato salad. My husband would stop eating certain foods if he had no mustard to go with them.
I can’t eat a hot dog, hamburger, or make potato salad without it.
For salad dressing, Dijon.
(Need to shop, tomorrow.)
I use mustard in my 1000 island dressing. I also make my own mayonnaise using mustard with a immersion blender:
Mayonnaise Best Recipe:
2 eggs
2 cups saffola oil
2 TBS lemon juice
2 TBS white vinegar
1 tsp sugar
1/2 TBS Kosher salt
1 TBS Dijon mustard
½ tsp paprika
½ tsp garlic powder
Small pinch of cayenne pepper
Black pepper to coat surface of oil
Put all ingredients into a wide mouth quart jar.
Use an immersion blender on high, starting from the bottom of the jar and slowly work the blender in circular motions up to the top. The result will be a custardy emulsion.