Performance Under Pressure with the iSi Rapid Infusion Tool 5 -Piece Kit w/ Receipe Book. Professional chefs and bartenders are using the iSi Rapid Infusion technique in the iSi Gourmet Whip to quickly infuse solid & liquid ingredients in minutes. Infuse liquids like vodka with fresh ingredients to create fresh, custom flavors. Or, make your own custom bitters. Likewise, liquid ingredients (marinades, etc.) can be infused with solid ingredients (meats, proteins) using this technique, making it perfect for the kitchen or for the bar. The iSi Rapid Infusion kit includes valuable process improvements and new features to increase efficiency and ease. Dishwasher safe, 100% stainless steel pieces, 100% silicone gasket & dispenser, BPA free, 2 year warranty. For use with the iSi Gourmet Whip Only. 5-piece kit, includes: (1) sieve with attached silicone gasket, (1) ventilation tube, (1) silicone tube, (1) cleaning brush, & recipe book, dishwasher safe, BPA-free silicone, constructed of stainless steel and silicone.