The New High Altitude Cookbook recommends 25 percent less leavening agent at 2,000 feet [600 m] extending up to 75 percent less at 8,000 feet [2,000 m].
„ The New High Altitude Cookbook ” soovitab võtta kergitusainet 600 meetri kõrgusel 25 protsenti, 2000 meetri kõrgusel aga 75 protsenti vähem.