Grosh normally provides useful suggestions, but sometimes you just happened to buy something without using Grosh. This makes it hard for Grosh to keep record of your grocery stock, so try always to use Grosh :) Anyway, we know it happens, so here is the solution: if you start get a suggestion for stuff you know you don't need, there is now an easy way to make Grosh stop suggesting it - just swipe LEFT on the suggestion screen (similar to deleting on the grocery list). Suggestions that have not been bought for a longer period are automatically removed from the suggestion screen.