peel the cucumber, if desired, and trim the ends; cut the cucumber in half lengthwise. cut the halves lengthwise into 1/4 -inch-thick slices, then crosswise into enough 1/4 -inch pieces to measure 1/2 cup (1 cup).
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kids can!
- strip the parsley leaves.
- stir the cucumber tzatziki.
- top the gyros with spinach, tzatziki, and tomatoes.