In food processor:
break up about 6 oz of dark chocolate (I had about 2 oz of a year-past-expiration 88% bar and a whole new bar of 85% German chocolate)
1/2 C sugar
pulse until small bits
Add:
1 C cocoa powder (I use natural process)
1 C powdered sugar
2 T corn starch
pulse again until it looks like hot chocolate mix ... store in a jar.
To use, put 2-3 T per cup of milk, heat while stirring frequently. Serve with marshmallows or whipped cream. This is a DARK chocolate cocoa ... "too chocolaty" to my dark chocolate loving five year ... so use less powder or cut with milk for the kids.