From the brewery:

The Chimay Blue Cap, baptized "Grande Reserve" in 750 ml bottles is a dark Trappist beer with a powerful aroma, the complex flavor of which improves across the years. It was first brewed as a Christmas beer by the monks of Scourmont Abbey in 1956.

This authentic Belgian beer, whose tinge of fresh yeast is associated with a light rosy flowery touch, is particularly pleasant. Its aroma, perceived as one enjoys it, only accents the delightful sensations revealed by the odor, all revealing a light but agreeable caramelized note.

It is ideally served at cellar temperature (10 to 12°C).