Mix pecans with salt and filtered water and leave in a warm place for at least 7 hours or overnight. Drain in a colander. Spread pecans on a stainless steel baking pan and place in a warm oven (no more than 150 degrees) for 12 to 24 hours, turning occasionally, until completely dry and crisp. Store in an airtight container.
Variation:
Crispy Walnuts: Use walnuts instead of pecans.
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