A recipe was a list of instructions and ingredients that enabled one to concoct a food, beverage, or chemical substance. A family recipe was generally a customized recipe that was handed down through the family from generation to generation.
Hoshi Sato's grandmother had a recipe for oden that she kept in Enterprise NX-01's epicurean database. Her preoccupation with preparing it was one example of the bizarre effects on the crew of Enterprise caused by radiation coming from a trinary system. (ENT: "Singularity")
Trip Tucker believed that if Jonathan Archer asked his parents what his favorite food was, she'd give him the recipe for her pan fried catfish and wouldn't let him leave until he promised not to ruin it. (ENT: "Silent Enemy")
William T. Riker offered to have a technician program the replicators with Acamarian recipes for Marouk's benefit. Later, he referred to a kiss from Yuta as an "Acamarian dessert recipe". (TNG: "The Vengeance Factor")
In response to Gul Ocett's flippant suggestion that a mysterious message could simply be someone's recipe for biscuits, Nu'Daq sarcastically claimed his mother had one and offered to send it to her. (TNG: "The Chase")
Neelix thought that the recipe for plomeek soup in the USS Voyager's computer databank was bland. He altered it slightly to produce "plomeek soup à la Neelix" for Tuvok. The Vulcan told him that by changing the recipe, it wasn't really the taste of home he claimed it was. (VOY: "Faces")
The recipe for chadre'kab had been in Neelix's family for generations. (VOY: "The Raven") Neelix later served a meal consisting of Talaxian spice stew served over leola rice pilaf, which he also described as "an old family recipe." (VOY: "Repentance") His family also had "an old family recipe" for taga cake. (VOY: "Homestead")