Ingredients
545 g (2¾ cup) sugar
1 cup (2 sticks) butter
6 large eggs
360 g (3 cups)* sifted AP flour (I've never actually sifted the flour, but that's what Mom's recipe says.)
3 g salt (I've used both regular table salt and kosher salt with no noticeable difference in results. My son claims he can taste the iodine if I use iodized salt, but I haven't tested this in a double-blind study.)
¼ tsp baking soda (In case you're curious, ¼ tsp of baking soda is about 1.5 g, but few people have a scale accurate enough to measure baking soda by weight.)
227 g (1 cup) dairy sour cream
½ TBSP lemon extract
½ TBSP orange extract
½ TBSP vanilla extract
Feel free to play with the amount of extract, but be careful; it's easy to overdo it!
* I recommend measuring your flour by weight to ensure consistent results. If you want to use volume measurements, don't scoop the flour using the measuring cup. Instead, spoon flour into the measuring cup until it heaps above the cup, and level it with a butter knife or other straight edge. If you scoop directly, you'll likely get too much flour, which could make the cake dry.
Preheat oven to 350°F
In mixer bowl, cream together sugar and butter until light and fluffy
Add eggs one at a time, beating well after each addition
Add extracts and beat well
Sift together flour, salt and soda (Or, you can put all 3 in a bowl and mix them up with a fork or whisk, which is what I actually do!)
Alternate adding the flour mixture and sour cream to the batter, beating after each addition
Pour batter into greased and floured 10-inch tube pan (I use Baker's Joy cooking spray instead of grease and flour.)
Bake in 350°F oven for 1½ hours (1¼ hours in roaster) or until cake tests done. In my oven, I put the cake in with the rack in the center (entire cake in the top half of the oven), and it's done in 75 minutes; I use a non-stick aluminum tube pan.
Cool for 15 minutes then remove from pan; Cool completely before cutting or storing.
You can frost or sprinkle with confectioners sugar if you like. I like it drizzled with glaze icing, though I rarely do this; this is an excellent cake without any additions.