Rachel Royce wrote:Where do those amazing glass jars with glass lids come from?
These jars are made for canning foods. We call it 'wecken', may be 'wecking' in English, because the brand name of these jars is Weck.
For canning you need a rubber seal between the jar and the lid and two or three little clamps to hold the lid until it is 'wecked'.
The clamps can be removed after heating and cooling down. The vacuum will keep the jar closed, unless your food goes bad and some colony of bacteria makes air.
I'm not sure if I'm allowed to link to a webshop. If not, let me know.
For now, you can see the jars I prefer here:
https://weckenonline.com/weckpotten-en-inmaakglazen/weck-stortmodel
There is info about them on wikipedia:
wikipedia in Dutch:
https://nl.wikipedia.org/wiki/Wecken (just for the pictures, I guess you don't read Dutch)
wikipedia in English:
https://en.wikipedia.org/wiki/Weck_jar
I use them for canning (wecking), but also for freezing or fridging food. The sort-of-cone-shape gives the food enough room to expand in the freezer, so the jars don't break. If you'd use other types/shapes of these jars, they could break.