Place a 9x5-inch loaf pan in the freezer to chill. Stir the instant espresso powder into the hot water until fully dissolved.
Add the cottage cheese, sweetened condensed milk, maple syrup, dissolved espresso, vanilla and salt to a high-speed blender. Blend for 1 to 2 minutes until completely smooth and silky, with a rich coffee color.
In a large chilled bowl, whip the heavy cream with a hand mixer until stiff peaks form, about 2 to 3 minutes.
Stir a large spoonful of the coffee mixture into the whipped cream to lighten it. Gently fold in the rest until smooth and evenly colored.
Set aside 2 tablespoons of the chopped chocolate. Fold the rest into the ice cream base.
Spread the mixture into the chilled pan and sprinkle the reserved chocolate on top. Press plastic wrap onto the surface and freeze for at least 6 hours or overnight.
Soften at room temperature for 10 minutes before scooping. For a café-style treat, pour a hot shot of espresso over a scoop and serve right away.