I have personally never been to The Purple Cow, but I have friends who RAVE about it (especially their milk shakes). AP Daily Deals has $20 vouchers to The Purple Cow for just $10. This is valid at all three locations - Dallas, Plano & Fairview. Even better - when you purchase this $10 deal, you will receive $5 credit towards your next AP Daily Deal! Go HERE for full details and to purchase.