Preparations: Preheat the oven to 160 degrees Celsius/ 320 degrees Fahrenheit. Butter the springform and sprinkle it with 1-2 tablespoons of ground almonds; shake the pan to coat it with the almonds. Turn it over the sink and pat gently to remove the excess nuts (Note 4).
Prepare cherries: Pit the cherries if using fresh. Defrost and drain frozen or canned ones. Pat them dry with kitchen paper.
Wet ingredients: In a large bowl, beat the soft butter and the sugar until pale and fluffy. Add the vanilla extract and lemon juice and stir to incorporate them. Add the eggs, one by one, beating well in between.
Dry ingredients: In another bowl, mix the flour, ground almonds, baking powder, and salt. Add them gradually to the egg mixture, alternating with the sour cream.
Mix the cherries with the 2 tablespoons of flour; this will prevent them from sinking to the bottom of the cake. Fold into the batter.
Place the batter into the prepared springform and sprinkle with the flaked almonds.
Bake for about 1 hour or until a toothpick inserted in the middle of the cake comes out clean.
Cool the cake in the pan for about 20 minutes. Run a small knife around the tin ring to help release the cake, if necessary. Remove it from the tin and let it cool on a wire rack.