ReaLemon 100 % Lemon Juice
Although I do like to keep fresh lemons in the house, the usually get used up pretty quickly. So I like to keep a bottle of ReaLemon lemon juice in the fridge. Its good for making a glass of lemonade. I've also been using it as a salt substitute. And I read somewhere it's good for removing ink stains on clothing. Also a good marinade for fish.