A list poem will usually have an introduction and conclusion to give a reason for the list. Generally list poems don't rhyme, but the inspiration for this prompt has rhyming couplets of flavors. So try generating a list of flavors (like berry and cherry) that rhyme before enhancing them. It will help the flow and maintain interest if there's a pattern with periodic surprises. Often the last item will feel like a conclusions being particularly exceptional or tying the items together.