Rather than sticking with the tried and true ,experiment with at least two new vegetable or fruits each month,picking what's in season and grown locally,whenever possible .As an alternative to potatoes,try trunip,parsnip,rutabaga or celeriac choose mustard, turnip,or collard greens instead of kale or swiss chard. You can also explore the produce aisles at asian,middle easter,or latin america food market for a wider varirty of option.