Heat the oven to 350°F. Combine the fat, flour, sugar, extract, and soy sauce. Stir until smooth. Halve the peaches and discard the stones. Divide the mixture between the peaches, about 2 tablespoons per peach. Spread it to evenly coat the peach. Place in an ovenproof casserole or skillet. Transfer to the oven and bake until the peach is tender to the point of a knife and the almond topping is golden brown, about 30 minutes. Meanwhile, garnish the plates with skyr, candied ginger, and honey. Rest the peaches on top and garnish with sage.