Substituting CHOCOLATE:

FOR:  SUBSTITUTE WITH:   
1 ounce baking chocolate = 1 baking chocolate square (read package to confirm)

Unsweetened Baking Chocolate: 1 ounce square

= 3 level tablespoons Dutch-process or regular (nonalkalized) cocoa PLUS 1 tablespoon shortening or butter or oil = 1/2 cup (3 oz) "morsels" (unsweetened), cut sugar by 1/4 cup and shortening by 1 TBSP. 

Unsweetened Baking Chocolate: 1 ounce melted

= 3 level tablespoons Dutch-process or regular cocoa PLUS 1 tablespoon oil or melted shortening or butter = 1 square of unsweetened baking chocolate equals 1 packet of pre-melted chocolate.

Semi-Sweet Chocolate:  1 cup (6 oz.) semi-sweet chips or 6 squares or bars (6 oz.)

= 6 level tablespoons Dutch-process or regular cocoa PLUS 7 tablespoons sugar plus 1/4 cup shortening or butter. 

=Semisweet chocolate morsels and semisweet chocolate squares can be used interchangeably when a recipe calls for this type of chocolate to be melted. 3 oz semisweet baking chocolate = 1/2 cup (3 oz) "morsels"

Semi-sweet ( 1 oz.)

=1 ounce unsweetened chocolate plus 1 tablespoon sugar

Sweet Baking Chocolate: 1 bar (4-oz.) 

= 3 level tablespoons Dutch-process or regular cocoa PLUS 4-1/2 tablespoons sugar PLUS 2 tablespoons and 2 teaspoons shortening or butter 

= 4 ounces German baking chocolate

Bittersweet Baking Chocolate (1 oz)

= 1 ounce Semisweet chocolate, although somewhat sweeter, can be substituted for 1 ounce bittersweet. 

Semi-sweet ( 1 cup chopped)

= Bittersweet chocolate, although less sweet, can be substituted

German Baking Chocolate (1 oz)

= 1 ounce dark sweet chocolate

Milk Chocolate (1 oz)

= sweet chocolate OR semi-sweet chocolate

White Chocolate / Chips (1 oz)

= milk chocolate OR white chocolate chips (To make chips, cut milk or white chocolate into chunks)