To quickly aerate a full 750ml bottle of wine, simply place the transitional collar on top of the glass carafe and then place the Vinturi Reserve Red Wine aerator on top. Slowly pour your wine into the Reserve aerator, and watch it flow through and down into the carafe. When wine is poured into the Vinturi Reserve aerator, its internal, patented design creates an increase in the wine’s velocity while simultaneously decreasing its pressure. This difference in pressure draws in the proper amount of air, which mixes with the wine for the right amount of time, and delivers a better bouquet, enhanced flavors, and a smoother finish – the absolute perfect aeration. It’s that easy. To quickly aerate a single glass of red wine, simply place a glass under the Vinturi Reserve aerator and pour wine through.