“Papa’s Favorite Hamburger” (referring to Hemingway’s nickname) calls for nine ingredients to be mixed into lean ground beef — including Spice Islands mei yen power, soy sauce, garlic, India relish, capers and wine — before forming it into “fat, juicy patties” and frying them in oil so the final product is crispy brown on all sides and “the middle pink and juicy.”
You’ll see hand-written notes all over the recipe, including one calling for grated cheddar to be added to the patty blend.
The author’s hamburger recipe was just released by the John F. Kennedy Presidential Library’s Hemingway Letters Project.