I worked in a bakery that made huge vats of butter-cream and stored it in 5 gal buckets, out of refrigeration, for up to a week. That being said, if you are using real butter (as opposed to margarine) I would recommend using it as soon as it is made and refrigerating any leftovers within a couple of hours. Not only will you risk spoilage otherwise, but overly soft buttercream is very hard to decorate with.
Homemade vinaigrette can last for about 2 to 3 weeks when stored in the refrigerator.
Homemade salsa typically lasts for about 5 to 7 days in the refrigerator when stored in an airtight container.
Homemade mayonnaise typically lasts for about 1 to 2 weeks when stored in the refrigerator.
Homemade hot sauce can last for about 6 months to a year if stored properly in the refrigerator.
Homemade tomato sauce can last for about 5-7 days when stored properly in the refrigerator.
Homemade mayo typically lasts for about 1 week when stored in the refrigerator.
Homemade mayonnaise typically lasts for about 1 week in the refrigerator before it spoils.
Homemade mayonnaise typically lasts for about 1 to 2 weeks in the refrigerator before it spoils.
Homemade salad dressing typically lasts for about 1 to 2 weeks when stored in the refrigerator.
Homemade dressing is typically good for about 1-2 weeks when stored in the refrigerator.
Homemade Caesar dressing typically lasts for about 1-2 weeks when stored in the refrigerator before it expires.
Homemade dressing typically lasts for about 1-2 weeks when stored in the refrigerator before it goes bad.