Select firm, ripe, red strawberries with uniform color. Wash and core. Slice about 1/4-inch thick. Tomato slicing tools with multiple blades work well for this. Place on dehydrator trays with the cut side up. Dehydrate at 130o for 8 to 16 hours or until dry. Berries should still be pliable or leathery when dry and should have no pockets of moisture in them. Remove from trays and dry heat process in canning jars for longer shelf life. One pound of strawberries yields about 1 cup dried sliced strawberries.