Potatoes

Potatoes are often quite cheap.  They can easily bought in bulk and can be stored at room temperature in most conditions.  They are one of the most useful vegetable you can keep in your kitchen.  They can be used in soups, stews, pies, side dishes such as mashed potato, chips, wedges and on their own and roast potatoes.  Cooked potato can last quite awhile in the fridge.  So you can cook up a batch of roast potatoes, for example, and store them for a lunches and dinners later in the week.

Potatoes are a good way to bulk out your diet when trying to avoid wheat products as most food places will have a friendly potato option on the menu such as chips or jacket potatoes.  They might even have nice potato salads. They only thing top be wary of is that oil that is used to fry things like chips.  Quite often every fried food in the shop with be cooked in the same vat, meaning that the oil will contain traces of gluten.  Most places are quite happy to cook it separately if asked.