Most Cognac houses will use Cognacs much older than those required by law, allowing X.Os to reach a minimum of twenty years of age, in order to reveal their very best. Some of the world's most prestigious restaurants serve their best Cognacs in a gigantic 'ballon' glass. The aroma of the Cognac rises straight into the nose, thus concentrating the smell and overwhelming the taste buds.
True connoisseurs choose a smaller glass in a tulip shape.
Containing 13cl, it should only be filled with 2.5cl. In such a glass the aroma is concentrated before revealing itself steadily, allowing time to discover its subtle fragrances, observe its delicate color and mellow before even sipping it. The experience of a fine Cognac should be one satisfying all senses, sight, olfaction and naturally, taste. Finally, the taste. It should confirm the impressions experienced before.