Pioneers settled the frontiers of North America in the late 18th and 19th centuries. They grew their own food and often gathered wild plants, fruits and hunted game. A staple food was apple butter, made by cooking chopped apples and cider in a copper kettle over an open fire for hours until thickened. It was a communal process involving many people. Apple butter was commonly eaten plain or used to flavor meats and breads. Other pioneer foods included vegetables from gardens like corn, potatoes and beans, as well as meat from livestock and game. Main cooking methods used resources available on the frontier like open fires fueled by wood or buffalo chips.