Known for its robustness, the bistro glass from the Picardie series is very popular in France, not only in the catering trade but also at the family table - it takes the odd temperamental outburst in its stride. Made from solid-colored glass, it loses none of its colorful brilliance even after years of use. Especially as the "Amber, la couleur tendance qui fait bien sur toutes les tables" version is considered in France to be the color "that cuts a fine figure on every table".

Duralex in central France has been producing utility glass from tempered glass for decades. The process of making glass less impact-sensitive and at the same time heat-resistant by alternating between heating - to around 600 °C - and rapid cooling in the annealing lehr has now also been mastered by others. However, hardly any glass has achieved such worldwide fame as the bistro glass from the "Picardie" series, which has long been an integral part of French pubs.

Tempered glass is considered impact-resistant and shatterproof. Nevertheless, you should handle these drinking glasses with the same care as any other "normal" glass, as tempered glass is under tension so that the vessels are also suitable for hot drinks. Microscopic cracks in the material - caused by knocks or blows, for example during the cleaning process in the dishwasher - or material fatigue due to ageing can cause the stress ratios to become unbalanced and the glass to break.