At the Seattle Mariners, the Sultan of Sandwich takes on the uber popular avocado toast. This millennial favorite continues to be popular. The Centerplate version features a heaping scoop of avocado on Franz Bakery organic high-protein, gluten-free bread. Guests can customize their toast with two toppings. Also included in this preview of the best MLB eats for 2019: KuKu flying fish roe fries, a fries and ice cream combo and a five-spice fried chicken thigh sandwich, all available at T-Mobile Park.