So I don't know what's up with Mike's....
Hey there Drew,
Thank you for taking the time to contact mike's hard lemonade with your question.
Although mike's hard lemonade products do not contain any inherently non-kosher ingredients such as animal derivatives or grape juice, we have not applied for kosher certification. Our products are produced at multiple sites throughout North America that are co-manufacturers for our products and are unable to make any claims as to what ingredients are or are not used in other products run on the same equiptment.
Have a great day and Make it Mike's!