The standard garden-variety cucumber is the seediest. So when you don’t want the seeds to complicate the texture achievement of your recipe, you simply remove them.
Peel the cucumber, then cut each end off.
Cut the cucumber in half from end to end.
Put one half cucumber cupped in your hand, seed side up.
Take a flatware teaspoon and draw it over the seeds from end to end, down to the flesh of the cucumber.
Clean it up, removing any gelatinous material and there it is – a canoe.
Slice or dice the cucumber canoe depending on the needs of the recipe.