This time Matt faces his fears and battles his claustrophobia to complete an epic vegan food challenge set by the south and mid-Wales cave rescue team. This group of intrepid, subterranean explorers are called to rescue people trapped hundreds of feet beneath the ground and are used to traversing one of the most extreme environments on the planet. This month they are taking part in a big training exercise at the Ogof Ffynnon Ddu. Can Matt make them see the light by cooking a vegan meal that will give them the energy they need to keep them going through the training rescue?