Holler's planned June 2020 launch was impacted by the COVID-19 pandemic; the restaurant initially operated from a food cart before accepting take-out orders in July 2020 and offering dine-in service in April 2021.

The chicken fried trout sandwich had butter lettuce, dill mayonnaise, jalapeño jelly, and pickles on Texas toast.

[3] In November 2019, Eater Portland described plans for business partners Doug Adams and Jen Quist of Bullard Tavern to open Holler in 2020, serving buttermilk-brined fried chicken in the ground floor of the Meetinghouse apartment building.

[8] Holler began accepting take-out orders in July 2020[9] and started offering indoor dining service in April 2021.

A social media post read in part, "Sadly our industry has become all too familiar with this story, but opening during Covid and managing all that comes along with it as a brand new business, we did all we could, for as long as we could.

[2][15] Pie varieties included apple streusel, banana pudding, bourbon pecan, lemon meringue, and pumpkin made with squash.