Frying produces used cooking oil in the catering sector. Werner Humbel utilises this to produce biodiesel. However, the closure of the catering businesses presents him with challenges. His hopes are now pinned on the summer.
Source: Ursula Ruch, Swiss farmer from 05/05/2021
Biofuels Switzerland
Swiss Biofuels Association
Bahnhofstrasse 9
CH-4450 Sissach