Halve the cucumber horizontally. If your cucumber is long, cut it in half first as long pieces are difficult to cut evenly.
Peel both halves with a potato peeler or a small sharp knife. A swivel peeler is the easiest thing to use as it removes the least amount of flesh with the skin.
Scrape out the seeds with a teaspoon and then allow the cucumber pieces to drain with the seeded side down. Then cut or use as directed by the recipe.
Some recipes ask for the cucumbers to be salted to remove any bitterness. To do this, sprinkle the cut cucumber with salt, then put in a colander and leave to drain for 20–30 minutes. Rinse well and pat dry with paper towel.