What does Anne write about 'Food cycle' in her diary?

From the text:

"In the twenty-one months we've lived here, we've been through a good many "food cycles" -- you'll understand what that means in a moment. A "food cycle" is a period in which we have only one particular dish or type of vegetable to eat. For a long time we ate nothing but endive. Endive with sand, endive without sand, endive with mashed potatoes, endive-and-mashed potato casserole. Then it was spinach, followed by kohlrabi, salsify, cucumbers, tomatoes, sauerkraut, etc., etc."