Lemon Blackberry Trifle

INGREDIENTS

1 cup

granulated sugar

2 tbsp

packed lemon zest (from one large lemon, preferably organic)

1 1/2 cups

all-purpose flour

2 1/2 tsp

baking powder

1/2 tsp

salt

3/4 cup

milk (at room temperature)

1 tbsp

vegetable oil

3 oz

butter, at room temperature (6 tbsp)

2 tsp

lemon extract

large eggs (at room temperature)

3 oz

unsalted butter

1 cup

granulated sugar

eggs

egg yolks

2/3 cup

freshly squeezed lemon juice

24 oz

blackberries (12 oz can be frozen, but at least 12 oz should be fresh berries)

2 tbsp

granulated sugar

large mint leaves (finely chopped (optional))

2 cups

heavy cream

2/3 cup

powdered sugar