This is so much better than the kind from the box. Serve it warm with a little milk poured over the top, or with a small dollop of whipped cream.
1/2 cup sugar
1/3 cup unsweetened cocoa
1/4 tsp. salt
3 tbl. cornstarch
2 1/2 cups milk
1 tsp. vanilla
Mix the dry ingredients together, making sure to stir the cornstarch in well and get all lumps out. Gradually add the milk.
Cook over medium heat, stirring constantly, until mixture thickens. Remove from heat and stir in vanilla. Pour into 6 custard cups.
Microwave directions: This recipe pre-dates the microwave oven, but I have found that you can mix the dry ingredients and the milk (as above) in a large glass bowl and cook on high for 8 minutes (at least in my decades-old microwave), stirring well every 2 minutes. Add vanilla, and pour into custard cups. With the microwave, there is no risk of scorching, which can happen if you stop stirring when cooking the pudding on the stove.