Prepare the Pineapple Filling: Drain the canned pineapple and chop it into small pieces. In a mixing bowl, combine the pineapple with 3 tablespoons of sugar and 1 teaspoon of cinnamon. Mix well and set aside.
Prepare the Puff Pastry: Preheat your oven to 180°C (356°F). Roll out the puff pastry on a lightly floured surface. Cut it into squares or rectangles, depending on your preferred size.
Assemble the Pastries: Place a spoonful of the pineapple filling in the center of each puff pastry piece. Fold the pastry over the filling to create a triangle or rectangle, sealing the edges by pressing with a fork. Brush the tops with beaten egg yolk for a golden finish.
Bake the Pastries: Line a baking tray with parchment paper and place the pastries on it. Bake in the preheated oven for 35 minutes, or until golden brown and puffed.
Prepare the Tea: In a teapot or saucepan, combine black tea leaves, sliced ginger, apple slices, and sugar to taste. Add boiling water and let it steep for 5-7 minutes. Strain before serving.
Serve: Once the pastries are baked, let them cool slightly. Garnish with pomegranate seeds for an extra pop of color and flavor. Serve with the warm spiced tea.