In a large jar or pitcher, combine the coarsely ground coffee and cold water.

Cover the jar and let the coffee steep in the refrigerator for about 12 hours.

After steeping, strain the coffee using a fine mesh strainer or coffee filter.

In a medium saucepan, combine the dark chocolate chips and sugar over low heat, stirring until chocolate melts.

Once the chocolate mixture has cooled slightly, combine it with the cold brew coffee in a large pitcher.

Pour in the milk or milk alternative, stirring gently to mix.

Fill serving glasses with ice and pour the dark chocolate cold brew over it.

Top with whipped cream and chocolate shavings if desired.