Dunk a chunk of ginger in water to wet it, then scrape the skin with the edge of a one-tablespoon measure (metal works best). The skin, and only the skin, will come off, making this method easier and less wasteful than using a paring knife.
Scoop Out Seeds
Scrape and remove seeds from halved cucumbers (key for tzatziki), bell peppers, and squash.
Clean a Portobello
Run the spoon along the underside of the mushroom to remove the black gills, which turn the other food they touch an unappetizing dark color.