The glass portion set contains 4 portion jars (4 x 250 ml). They are made 100% in France from extra resistant glass. They can withstand heat and cold and are therefore suitable for sterilising, freezing or heating (freezer, microwave and dishwasher). The hermetic silicone lids are easy to attach and, thanks to this closure, preserve the aromas and flavours. Each jar has a dosage indicator. They can be cleaned simply and easily by hand or in the machine.