Understanding Glass: Why not all glass can be crystal

Anyone browsing the Swiss Bar Shop range will find a fascinating variety: wafer-thin tumblers, unusual designs and delicate works of art. Why don’t we simply use one universal material for our bar equipment?

The answer is simple: because different drinks have different physical requirements. Sometimes a glass needs to radiate pure elegance, sometimes it has to withstand brute force, and sometimes it has to defy extreme temperatures. Here we explain the three “superpowers” of our glass types – and why each one is indispensable in a professional bar.

1. Crystal Glass: The Aesthetics of Weight & Brilliance

Crystal glass is the classic choice for pure enjoyment. Thanks to its special mineral composition, it is denser and refracts light more strongly than any other glass.

• The advantage: It stands for maximum value. Its heavy weight conveys quality in the hand. At the same time, the material is hard enough to be ground into extremely thin rims, which refines the drinking experience.
• The perfect use: Crystal is unbeatable, especially for mixing glasses. Why? A mixing glass must be heavy. When you stir a Negroni, the mass of the crystal keeps the glass firmly and securely on the bar without wobbling. The thick walls also insulate the cold superbly.
• The physical limit: Because of its hardness, crystal is brittle. Very complex, playful shapes are hardly feasible, as the stresses in the material would be too high.

2. Standard Glass (Soda-Lime): The Master of Mechanics & Variety

This glass is the backbone of every bar. It is more flexible to produce and more elastic in structure than crystal.

• The advantage: It can be shaped and pressed excellently. This allows unusual designs, textures and retro patterns that would be technically impossible in crystal. It is also mechanically very resilient – it forgives knocks better.
• The perfect use: The classic partner for the Boston shaker. When you strike the glass into the metal tin (“sealing”) and later knock it loose again, strong mechanical forces are at work. A brittle glass would suffer here. Standard glass (often with a reinforced base) easily handles this rough bar treatment and is the robust partner for everyday shaking.

3. Borosilicate Glass: High Performance for Temperatures & Design

Forget everything you know about “fragile” glass. Borosilicate is the high-tech material of the modern bar scene. It is extremely light, yet harder and more scratch-resistant than conventional glass.

• The advantage (thermal shock): This glass knows no thermal limits. It has an extremely low coefficient of expansion. That means it withstands extreme temperature changes without cracking.
• From hot to ice-cold: Whether a piping hot Hot Toddy or modern experiments with liquid nitrogen (-196 °C) – borosilicate handles it all, where ordinary glass would shatter instantly.
• Delicate designs: Because the material is so stable, it can be blown into wafer-thin, filigree shapes that are still robust. Double-walled glasses (“floating effect”) are almost always made of this material too, as they stay light and insulate superbly.

Conclusion: Form Follows Function

At Swiss Bar Shop, we don’t choose the material at random, but to suit the purpose of your drink:

1. Looking for feel, weight and brilliance for stirred classics? Go for crystal.
2. Need mechanical robustness for the shaker, or love complex textures? Standard glass is your partner.
3. Want to play with temperatures (fire or nitrogen) or love feather-light, delicate designs? Borosilicate is the first choice.