Question: Can a food truck that makes pizza (non-kosher) be made kosher for an event?
Answer: Yes, it can be done.
A Kosher Michigan mashgiach (kosher supervisor) kashered a Chicago-area pizza food truck for an event. With a “severe” cleaning, burning (the ovens were kept at temperatures above 80 degrees Fahrenheit for over an hour), foil covering of prep areas, and the purchase of brand new utensils, this well-known food truck was made strict kosher for an event in the Chicagoland suburbs. All ingredients for the pizzas were ensured to be strictly kosher with approved hekhsherim (kosher symbols) as well.