Wash and dry the tomatoes
Remove stems
Slice tomatoes evenly
Remove seeds if desired
Arrange slices in a single layer
Sprinkle lightly with salt if desired
Dry in a dehydrator at 125°F to 135°F
Dry in an oven at the lowest setting with the door slightly open
Dry in the sun in a warm, dry, well-ventilated place
Turn slices occasionally for even drying
Continue until tomatoes are leathery or crisp
Cool completely before storing
Store in an airtight container
Keep in a cool, dark place
Refrigerate or freeze for longer storage