Jopen Ex-Girlfriend BA Jack Daniel's is an Eisbock from Brouwerij Jopen in Ermelo, the Netherlands. The beer starts as a four-grain Bock, which is frozen and concentrated using the traditional Eisbock method before spending 250 days maturing in Jack Daniel's whiskey casks. Its name playfully references the saying 'Beer as cold as your ex-girlfriend's heart'.

The beer reveals a full, warming character shaped by its barrel aging. Sweet notes of caramel and chocolate blend with vanilla, ripe fruit and raisin from the Jack Daniel's wood. A substantial body carries through to a lengthy finish, with the elevated alcohol warmth adding depth without harshness.