Substitute for bittersweet chocolate for cookie recipe?

[superluckycat]

Hi,
I am making the Mexican Chocolate Cookies from Cooking Light and only have 3 of the 5 ounces of bittersweet chocolate needed. I have some semisweet and some unsweetened. I don't want to run to the store since we're having our Freaky Houston Snowstorm right now. What can I do for a sub? There are a lot of spices in the recipe if that helps mask any sub,
Thanks!

[superluckycat]

Thanks everyone! Can you imagine a better snowstorm snack than a bottle of red wine and chocolate cookies right out of the oven?????

[chowser]

Use semi sweet. There's no "official" difference between bitter and semi.

[bushwickgirl]

chowser, I'm not sure what you mean by "official" but the difference between bitter and semi is the percentage of sugar the chocolate contains.
That said, I agree that the OP should use the semi-sweet.

[chowser]

http://www.chow.com/stories/10382

[janniecooks]

Use one ounce each of the semisweet and unsweetened and you probably won't know the difference.