As our Burpple voucher also offered a one-for-one discount on iced coolers, we decided to order two iced coolers ($5++ each) to try. For our first, we ordered the butterfly pea flower iced cooler. While we certainly expected a purplish/bluish hue, we didn't expect the drink to taste sweet because our impression was that the butterfly pea flower tasted slightly floral, albeit almost tasteless. We are guessing that honey might have been mixed into it but we are not able to tell!
The drink wasn't very impressive and we wouldn't recommend it unless you have a Burpple Beyond voucher to spare.