You get new recipies by giving ingredience like milk, eggs, crops, or things like curry
power, oil, and so on.

you can only do this once the diner and cafe have been upgraded. meaning, that they are
bigger buildings.

Both the Diner and Cafe owners will only be able to give you one new recipie each day.
Thats 2 new recipies every day.

Every day, keep giving them the same ingredient you gave them the day before, untill they
tell you that they can no longer cook anything from that ingredent.

Giving Milk to the lady at the cafe, will eventually get you the recipie for yogert.

If you need anymore help with getting recipies, just send me a message and ill be happy to
help.