Why does my contribution to SAF help Finnair cut ties with fossil fuels?

What makes sustainable aviation fuel a better option for the climate, are the feedstocks used and thus the CO2 emissions reduction achieved. Conventional jet fuel is primarily made from crude oil, a fossil fuel, whereas SAF is primarily made of waste and residues, such as used cooking oil and animal fat. The more SAF the aviation industry is able to use, the less fossil based conventional jet fuel is needed. It is good to know that there are several production pathways for SAF with several different feedstocks available. Finnair, however, will only use your contribution to SAF that meets the criteria set by EU.