Onsen Eggs
Onsen eggs are Japanese-style slow-cooked eggs with a custard-soft white and a gloriously runny golden yolk. Made with just eggs and water, the Thermomix TM7 heats the water bath with such precision that every egg reaches that silky Japanese onsen texture. Serve on rice, ramen or toast for an elegant starter or protein-rich snack.
About this recipe
Onsen Eggs with the Thermomix TM7 bring the famous Japanese hot-spring egg straight into your kitchen with nothing more than eggs and water. These slow-cooked eggs have a uniquely silky, just-set white and a rich, flowing yolk — the texture ramen chefs train years to master. Searching for onsen egg recipes for your all-in-one kitchen machine pays off here: the TM7 holds the water at a gentle, stable temperature for the full cooking time, eliminating the guesswork of a saucepan on the hob. This quick preparation works beautifully as a brunch centrepiece, a protein-rich breakfast, or a refined starter before a Japanese-inspired dinner. Because the eggs finish unattended in the precisely heated water, you can prepare rice, dashi or toppings meanwhile. Once you taste that custardy white against the golden liquid yolk, you will keep a batch of these eggs ready in the fridge all week.
Preparation tips
- Use the freshest eggs you can find, ideally at room temperature, because fresh eggs hold their shape better and the yolk stays beautifully centred during the gentle water bath in the mixing bowl.
- Peel the onsen eggs with care: their custardy whites are delicate, so tap softly, peel under a thin stream of cold water and start at the wider air pocket for an intact, glossy egg.
- Store peeled or unpeeled onsen eggs in a covered container in the fridge for up to two days and warm them briefly in hot water before serving over rice, ramen or sourdough toast.
Recipe variations
- Season the peeled onsen eggs Japanese-style with a marinade of soy sauce, mirin and a splash of rice vinegar; let them soak for a few hours so the salted custard whites absorb deep savoury flavour.
- For a brunch twist, serve the onsen eggs on toasted brioche with crispy bacon, spring onion and a pinch of smoked paprika, or with truffle mayonnaise for a festive starter.
Thermomix TM7 Benefits
- Temperature control - The Thermomix heats the water bath precisely so the eggs cook to a silky custard white. [Precision Control]
- Built-in scale - Weigh the water directly in the mixing bowl of the TM7 for the exact onsen egg ratio. [Precision Control]
- Hands-free cooking - The TM7 keeps the water steady while the eggs soften without any stirring needed. [Hands-Free]
- Time savings - The Thermomix reaches and holds the target water temperature faster than a pan on the hob. [Time Savings]
- Easy cleaning - The TM7 mixing bowl simply rinses out after the water bath, leaving just one container to wash. [Multi-Function]
Ingredients
- water
- eggs