This isn't Ginger's, but perhaps it will help - I found it on the internet:

Hard-Shell Ice Cream Sauce Recipe
Ingredients

1 cup (6 ounces) semisweet chocolate chips
1/4 cup butter, cubed
3 tablespoons evaporated milk
Vanilla ice cream
1/2 cup sliced almonds

Directions

In a heavy saucepan, combine chocolate chips, butter and milk. Cook and stir over low heat until chips are melted and mixture is smooth. Serve warm over ice cream (sauce will harden). Sprinkle with almonds. Refrigerate any leftovers. Sauce can be reheated in the microwave.

Yield: about 1 cup.

This is the link I posted last April on the Dessert Exchange. The person who requested it made it & liked it. It's from recipezaar.

Here is a link that might be useful: Choclate Salce Dairy Queen Style

Thanks. I realized that yesterday and found it.