A variance must be acquired before: 1) Smoking or curing food for preservation; 2) Using food additives or components, including vinegar, to preserve food or render a food so it is not potentially hazardous; 3) Using a reduced oxygen method of packaging food; 4) Operating a molluscan shellfish life-support system; 5) Sprouting seeds or beans …
https://www.city-data.com/restaurants/OR/WILLOW-THAI-CUISINE.html

