Preheat to 325˙

INGREDIENTS:

• 2 c butter
• 2 c sugar
• 10 eggs, separated
• zest of one lemon (preferably Meyer)
• 1 tsp salt
• 1 tsp tartar
• 4 c sifted flour

DIRECTIONS:

• Mix together butter, 1 1/4c sugar
• Add egg yolks, one at a time
• Meanwhile, mix egg whites, tartar and salt until stiff, add remaining sugar, 1 tblsp at a time until VERY stiff
• Combine lemon zest into flour mixture
• Fold egg whites in remaining flour into butter mixture

Bake 1 1/2 hrs