Preheat the oven to 350F. Wrap bottom and sides of pan in a double layer of heavy-duty foil; place in a large oven bag, tucking ends so the bag is flush with the top edge of the pan.
Stir together the graham cracker crumbs, packed brown sugar, and sea salt together in a bowl. Pour in the melted butter and stir well.
Add the crumbs to your springform pan. Press in the the bottom. Use the bottom of a lightly greased cup. to ensure the crumbs are tightly pressed in.
Bake the crust for 15 minutes, then remove from the oven. Turn down the oven to 325F.
Mixed Berries
Add the berries and sugar to a small saucepan and heat on medium-high heat while the crust is baking.
Continue to cook until the juices start to thicken into a syrup.
Remove from saucepan and allow to cool completely.
Matcha Cheesecake
Beat the cream cheese until smooth.
Stir together the sugar and matcha powder and then add to the cream cheese. Beat until well-combined, scraping the sides and bottom of the bowl as needed.
Stir in the sour cream, vanilla, lemon, and salt and beat until well-combined.
Beat the eggs, then mix the eggs into the cheesecake mixture. Be careful to gently mix in until it is combined without overwhipping the mixture.
Pour the batter into the crust and spread the mixture evenly. Place the pan into a large roasting pan and add hot water until it reaches about an inch up the sides of the pan.
Place the pan in the middle rack of the oven and bake for about 1 hour to 1 hour 25 minutes, or until the sides are set, but the middle still slightly jiggles. Loosely top the pan with aluminum foil to prevent browning, if needed.
Turn off the oven and leave the cheesecake in the oven until the oven cools.
Remove the pan and place on a wire rack to cool to room temperature. Store covered in the refrigerator until completely chilled.
Whipped Cream and Assembly
Pour the heavy cream and powdered sugar into a bowl. Whip with a wire whisk until it reaches medium peaks.
Spread the whipped cream on top of the cheesecake, then top with the berry mixture.