Kettle-rendered. When it comes to sourcing and crafting our duck fat we'll admit that we can get a little quackers. But we're ok with that since being crazy about traditional fat is the reason serious fat lovers insist on fatworks. Fine-filtered. Great for cooking up to 375 degrees. Duck fat is a seductive and savory oil with an irresistible aroma that is deliciously difficult to resist. One taste and you'll fall helplessly in love. Now - look deep into my beautiful fries. Small batch. Handcrafted. No preservatives. Made from cage free ducks. No artificial ingredients. Inspected for wholesomeness by US Department of Agriculture. Gluten free. Milk free. Wanna talk fat? Call us at 720-438-4530. Made in the USA.