Stroop Club, once a membership-based cookie club and now a full line of branded products, was founded by Chantal Piet and Tako Vermeulen, who moved from Amsterdam to Austin in 2015. They offer authentic stroopwafels, a Dutch cookie made with caramel-like syrup sandwiched between two crispy thin waffles. The Stroop Club started at the Mueller Farmer's Market and has since expanded to 26 different coffee shops, restaurants, and specialty markets around town.