Groupon is offering a $20 Krispy Kreme Credit for $10 for a limited time. The credit is only valid at select locations and can be used on doughnuts and beverages. A minimum purchase equal to the full offer value is required. Promotional value expires Aug 26, 2015. Amount paid never expires. Limit 10 per person, may buy 10 additional as gifts. May use multiple vouchers per visit. Not valid online.