Melt butter in pan over medium to mneadium-high heat. Let butter become slightly browned. Be careful to not burn the butter!
Add flour, sifting over pan. Use a whisk, and continue cooking butter and flour until smooth. This should cook for about 1-2 minutes, while whisking continually.
Add drippings from turkey while whisking. Keep heat on medium to medium high. Cook for about 3-4 minutes until smooth and gravy thickens.
Add the additional broth. Continue cooking until gravy is smooth and thickens back up a bit. Taste gravy.
If you have only used canned broth, and the flavor is not strong enough, add 1-2 packets of flavor enhancer (see recipe notes).
Mix until smooth. Taste and add more pepper if needed.
-If using all canned broth for gravy, you will need 1-2 packets flavor enhancer or booster. I like Knorr Homestyle Stock. It is sold near bullion, and is sold 4 tubs to a packet. You may also use bullion, or other brands of stock to boost the flavor of your gravy.
-This gravy may be made ahead and refrigerated until using. It may need to be thinned a bit with more stock or a little milk after reheating.