# Samo Ramen > The science and craft of ramen: recipes, techniques and tools. ## Recipes - [Tonkotsu ramen](https://samoramen.com/ramen/tonkotsu.md): Pork bones cooked until the soup turns creamy, seasoned with a simple salt tare and finished with scallion oil. ## Tools - [Noodle hydration calculator](https://samoramen.com/tools/noodle-hydration/): water from flour mass and a hydration percentage. ## About - [Our approach](https://samoramen.com/methodology/): how sources, calculations and observations are kept apart.