BrewDog is now offering 2-4-1 on its vegan and veggie menu on Mondays, all day, in all of its 37 UK bars.
In addition, the brand will be launching a new vegan menu on September 10. As part of the new menu, it has introduced the 'Plant-Based Punch Up'.
The initiative invites customers to compare two brand new vegan burgers and two new vegan pizzas against its existing line-up. The items which sell the most will stay on the new menu.
According to BrewDog: "First up on the new challengers is the V-Beet Burger, a seasoned vegan beetroot burger dressed with vegan mayo, baby gem and red onion.
"From today until August 26 we are pitting that against the Heil Satan. Which will remain in our bars? It's totally up to you. Between August 27 and September 9 we'll deploy the next round and square off Clucky This Time with an awesome Buffalo Cauliflower Burger.
"If your neighbourhood BrewDog Bar rocks pizzas then we are still rolling out the Plant-Based Punch Up between now and September 10. Our resident vegan pizza (The Hero) is duking it out with two potential newcomers – firstly a wild mushroom and roasted garlic pizza and secondly one topped with BBQ jackfruit. This is a three-pronged punch-up to pick a single victor. Winner stays on."