In a medium bowl, stir vinegar, sugar, salt, and pepper until sugar & salt are dissolved. Quarter cucumber lengthwise. Remove seeds. Cut quarters crossswise into 1/8" thick slices. Add cucumber, onion, cilantro & chili to vinegar dressing; toss until combined. Cover and marinate in the refrigerator for 3 hours, stirring occasionally.

From the MasterCook recipe list. Downloaded from Glen's Mm Recipe Archive,