Melt the Chocolate: Using a double boiler or in the microwave in 30-second intervals, melt the vegan chocolate chips until smooth and creamy.
Set aside to cool slightly.
Blend the Base: In a high-speed blender, combine the soy milk, drained silken tofu, sugar, instant coffee, vanilla, and salt.
Blend on high for at least 2 minutes, or until the mixture is completely smooth with no graininess.
Combine and Final Blend: Pour the slightly cooled melted chocolate into the blender with the tofu mixture. Process again until fully incorporated and smooth.
Freeze and Stir: Transfer the mixture to a large, freezer-safe container or loaf pan.
Place in the freezer.
Create the Creamy Texture: Stir the mixture vigorously with a fork or spatula every 30 minutes for about 4 hours. This breaks up ice crystals and creates a smooth, scoopable texture. If the mixture gets too firm, simply transfer it back to the blender, process until smooth, and return to the freezer.