When making my marshmallow fondant, I have had two instances where when I have bought the Great Value brand of powdered sugar from Walmart, it ended up tasting bad. Even from the moment I poured it in the bowl of marshmallows, I could tell something was different. Instead of a sweet smell, it had a kind of musty smell and when I tasted some it was horrible! Needless to say, i will not be buying THAT kind anymore. Just wondering if anyone else has had that problem....

I used it one time making american buttercream. I did not like it. My buttercream, that is usually soft and fluffy, was horribly dry.

I had the same taste issue with Walmart's powdered sugar and MMF. If they're out of everything but their brand, I'll go to a different grocery store to buy a real brand.

They may use more cornstarch/fillers and less actual sugar than the other brands.

I'm not sure if there is a Target in your area, but they are a good, inexpensive alternative- I use their Market Pantry brand of PS without any problems. And my SIL, who usually HATES any type of frosting or icing- actually will eat mine!

I've used Great Value and never had any problems with it. I love their shortening for buttercream. I think it has a higher fat content or something because I get way different results with Great Value shortening.

I have had problems with the Walmart brand PS consistency. Now I only use Dominos. It is about $.50 more a bag, but well worth it.

I used GV powder sugar for years, but recently the bags at my store have come from beet sugar (makes gritty icing) so I stopped buying it.