Distilled Water: Buy filter from Nadi.
Bread: Learned automatically.
Rice Ball: Learned automatically.
Sandwich: Buy recipe from Nadi.
German Potato: Deep Forest. Same map as the blacksmith's hammer, different hut.
Walnut Rice Cake: Well behind Abandoned Home/Refugee Home/Lisetteland.
Pudding: Kunui's Room (Sneak in through the well behind her shop).
Moonshine: Tina's Hut (Speak to Tina to learn it).
???: ??? (Never found this one, sorry.)
Tendon: Cape Comfrey. Red chest behind the rock block leading to the undercliff.
Apple Pie: Gordon's Cave (Not pregnant, pre-Lisette's Woes 4).
Apple Salad: Pirate Ship (Galley. Basically the room where you fix the key).
Shrimp Chili: Regmint (Marulie's bedroom).
Taco: Elven Hideaway (After the codelocked door, before the lab).
Cheesecake: Ancient Tomb (Second map).
Gorgeous Burger: Lower Lightroad (Third floor).
Cum Sandwich: Church of Hecate (Priest side of the confession booth. Lewd Path only).
Ovulation Day: Rhubarb Village Brewery (After drunken sex and Tina's questline. Lewd Path only).
Lisette's Stew: Birth a 5000g baby in the Pregurina (Lewd Path only).
Adeline's Specialty: Clear "Milk Gushers 2" sidequest (Lewd Path only).
Hope that helps.