Nelson Algren wrote about the historical foodways of the native people and European colonists in Illinois for the WPA back in the 1930s. According to his account, the earliest European farmers here grew cabbage, turnips, and potatoes that they stored overwinter in straw-lined trenches or pits. They also dried pumpkins, apples, peaches, and peppers. In addition to wooden and metal dishes, they used gourds. They ate "corn dodgers," a simple heavy cornbread learned from Native Americans, and also white-corn hominy from wood-ash lye. They made tea from Ceanothus americanus (New Jersey Tea or red
root), and also drank sour
milk. They used the herbs sage, sasparilla, and pennyroyal. Rutabaga, parsnips and lettuce are also mentioned.
As far as the vegetables are concerned, not too different from what people currently grow in their gardens here.