It’ll last up to three months Baker's Tip: What to do With Leftover Buttercream? Baker's Tip: What to do With Leftover Buttercream? Baker's Tip: What to do With Leftover Buttercream? Baker's Tip: What to do With Leftover Buttercream? Baker's Tip: What to do With Leftover Buttercream? Baker's Tip: What to do With Leftover Buttercream?