Make cake: Preheat oven to 350°F with rack in middle. Butter a 9-inch round cake pan (2 inches deep). Line bottom with a round of parchment paper, then butter parchment.
Sift together flour, baking powder, baking soda, and salt.
Beat together butter and sugar in a large bowl with an electric mixer until pale and fluffy. Beat in vanilla. Add eggs 1 at a time, beating well after each addition. With mixer at low speed, beat in buttermilk until just combined. Add flour mixture in 3 batches, mixing after each addition until just combined.
Spread batter in cake pan, smoothing top. Rap pan on counter several times to eliminate air bubbles.
Bake until golden and a wooden pick inserted in center comes out clean, 35 to 40 minutes. Cool in pan on a rack 10 minutes. Run a knife around edge of cake to loosen, then invert onto a plate. Discard paper and reinvert cake onto rack to cool completely.
Macerate berries: Bring Sherry and sugar to a boil in a small heavy saucepan, stirring until sugar has dissolved. Put berries in a bowl and pour hot syrup over them, gently tossing to coat. Let stand 15 minutes.
Make cream and assemble cake: Beat mascarpone and cream with sugar in a large bowl using cleaned beaters until mixture just holds stiff peaks.
Halve cake horizontally with a long serrated knife. Carefully remove top half and reserve. Put bottom half on a plate, then spread evenly with all of cream and replace top half. Serve with berries.
Cooks notes: Cake, without cream, can be baked 1 day ahead. Wrap in plastic wrap once cool and keep at room temperature. Berries can macerate at room temperature up to 2 hours.

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Nutrition Facts

Per Serving Per 100 g

Amount Per 1 Serving
Calories	451.42 Kcal (1890 kJ)
Calories from fat	266.67 Kcal
		% Daily Value*
Total Fat	29.63g	46%
Cholesterol	123.22mg	41%
Sodium	356.99mg	15%
Potassium	128.69mg	3%
Total Carbs	38.52g	13%
Sugars	29.3g	117%
Dietary Fiber	0.01g	0%
Protein	3.82g	8%
Vitamin C	0.2mg	0%
Vitamin A	0.1mg	5%
Iron	1.5mg	8%
Calcium	88.2mg	9%

Amount Per 100 g
Calories	195 Kcal (816 kJ)
Calories from fat	115.19 Kcal
		% Daily Value*
Total Fat	12.8g	46%
Cholesterol	53.22mg	41%
Sodium	154.2mg	15%
Potassium	55.59mg	3%
Total Carbs	16.64g	13%
Sugars	12.66g	117%
Dietary Fiber	0.01g	0%
Protein	1.65g	8%
Vitamin C	0.1mg	0%
Vitamin A	0.1mg	5%
Iron	0.6mg	8%
Calcium	38.1mg	9%

* Percent Daily Values are based on a 2000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.
Find out how many calories should you eat.

Tastes

salty
savory
bitter
sweet

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