To determine whether the "Professional (0.35 l)" milk jug from Cilio can be heated directly on a glass ceramic hob, you should consider the following points: 1. material of the milk jug: most milk jugs that are suitable for direct use on a glass ceramic hob are made of stainless steel or special heat-resistant materials. If the Cilio milk jug is made of one of these materials, it may be suitable. 2. manufacturer's instructions: Check the manufacturer's instructions or recommendations. This information can usually be found on the packaging or in the operating instructions. 3. safety instructions: Ensure that the milk jug does not have sharp edges or an uneven base, as this could result in uneven contact with the hob. If the milk jug is made of a suitable material and the manufacturer recommends using it on a glass ceramic hob, then it should be possible to heat the milk directly on it. Otherwise, it may be advisable to heat the milk in a different pan or to use a different suitable milk jug.

Basically yes, but the smaller one was not recognised by my cooker, too little contact surface. The larger one works perfectly on induction.