You are able to find food and drink along the GR20. All the refuges have food to sell but what their offer varies enormously and also depends upon when they were last stocked up.
The refuges in Corsica are not comparable to those on mainland France. Although they propose food and drink there facilitaties are so limited, you will find that you may have to be patient when you order and you should not expect a slick rapid service. If you look objectively at the equipment the refuges have and there location, I am sure you will find that the guardians are doing a great job. The fact that you can now find food and drink along the way makes such a difference to the original back packing scenario of plodding along with a monster size rucksack.
You will find that the refuges offer a breakfast, lunch and evening meal option, as well as having produce for sale in a small shop.
An example of a lunch time menu would be a plate of local smoked meats, a dish of pasta, or an omelette. This costs 12 euros. An evening meal costs 15 - 20 euros, this consists of a starter, a main meal and a pudding. Each refuge has a different menu on offer. You can also order a breakfast for the next day. Due to the early starting times, generally the guardians will prepare this for you the night before and give you a box of food for the next morning. You heat up your drink and leave as early as you wish.
- Breakfast: between 8 and 10 euros
- A can of local bear Pietra 50cl : 6 euros
- A can of coca cola, oringina etc: 3.5 euros