Described are mononuclearly filled seamless microcapsules comprising: a capsule shell of a hardened capsule material based on an acid polysaccharide and a filler material surrounded on all sides by the capsule shell, including an organoleptitic effective amount of a flavor, wherein the microcapules is heat stable and/or cooking stable and/or deep fry stable and the water portion in the capsule shell is adjusted to a value of .ltoreq.50 wt. %, based upon the total mass of the capsule shell.