Add eggs, one at a time, mixing well after each addition. Mixture may appear curdled.
Add flour gradually. Fold in vanilla.
Place in cold oven. Bake at 325 degrees for about 1 hour and 5 minutes. Cooking times may vary, so check at 5 minute intervals. A cake tester should come out clean.
Recipe by Whit and Wonder at https://www.whitandwonder.com/2012/12/21/pound-cake/