Choosing
The coating has gone: replace it, or change approach
A coating that has stopped releasing cannot be repaired, and cooking on a failed one is frustrating rather than dangerous in any way this site is qualified to judge. The interesting question is what replaces it: another consumable, or a pan that will still be here in twenty years. Both are legitimate, and the second requires a month of learning.
By Jean-Benoit Buisson
Two honest routes.
Route one: buy the same thing again
Nothing wrong with it. The Stoneline 28 cm publishes 4.7 cm of depth, 2.3 litres and a 22.8 cm induction base — more specification than almost any coated pan here. Treat it as a consumable, hand wash it, keep metal utensils out of it, and it will last as long as coated pans last.
Route two: uncoated stainless
The Tefal 28 cm uncoated textured stainless is oven safe to 250 °C, dishwasher safe, and the cheapest way into a pan you will never replace. The Silberthal 28 cm in 18/10 has a three-layer base with an aluminium core, which is what stops a hot ring in the middle.
The learning curve is real and it is short: preheat, fat, wait, do not fidget.
Route three: iron
The Krustenzauber 24 cm is ground smooth bare cast iron, for hob, oven, grill and open fire, with a recipe book. Ground smooth releases far better than an unground casting from the start.
The de Buyer 24 cm carbon steel is much lighter than cast iron, arrives beeswax-protected — wash that off before first use — and seasons the same way.
The surface you can repair
Only seasoning. A coating cannot be renewed; a seasoned iron or carbon steel pan that has lost its surface is stripped, re-oiled, heated, and it is new again. That is the argument, and it is the whole argument.