Dungeon Meshi is a Manga/Manhwa/Manhua in english language, Adventure series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.nl fastest updating comic site. The Summary is

After his sister is devoured by a dragon and losing all their supplies in a failed dungeon raid, Laius and his party are determined to save his sister before she gets digested. Completely broke and having to resort to eating monsters as food, they meet a dwarf who will introduce them to the world of Dungeon Meshi – delicious cuisine made from ingredients such as the flesh of giant bats, walking mushrooms, or even screaming mandrakes.