Want to know which is the best prepared mustard, PB and mayo? We have the answers here.

Brand X is a Frugalbits column that pits supermarket house brands against an industry leader—how does Best Foods mayonnaise compare with 365 Everyday Value mayonnaise, Whole Food’s store brand, for example? Sometimes the industry leader has the best quality for the best price, sometimes not. Our judge in these matters is the seasoned and conscientious chef Glenys Morgan. Here she weighs in with her opinion on mayonnaise, peanut butter and mustard. Read more