Truffle jar

Last night we had a wonderful dinner with friends.  They live in Paris most of the time but come to the "country" for a weekend break.    Food is their passion and although they had been in their weekend house for a couple of hours only - they had had time to grill a fish on the open fire and prepare these three vegetable dishes. 

Carrots, green beans and puree of courgette with garden sauge/sage.  The fish had a delicate flavour of smoke, the colours of the exquisite dinner service,  lovely wooden table and aromas of the wood fire made me immortalise this moment.

There was a present for Jean Marie.     Catherine who has been on truffle hunts with Jean Marie - had found this delightful truffle jar in a vide grenier.   Such a lovely shape - I have been looking on the web to find out the origin of the curved glass and why it would be called a truffle jar.    So far no luck - there are other truffle jars on ebay for instance but none quite like this one.    Can anyone enlighten me?   Would love to hear from you.