Teri and Debbie's Favorite Fudge

• 3/4 cup cocoa
• 3 cups sugar
• dash salt
• 1 1/2 cups milk
• 2 tablespoon butter
• 1 teaspoon vanilla extract

Combine dry ingredients. Add mild gradually. Cook until small soft ball is  formed when dropped in cold water. Add vanilla and butter. Beat...beat....beat. Pour into buttered pan and cool