Why on sugar cookies some recipes have reg butter and some ask for unsalted please let me know........
I am new to all this baking and I dont see the difference..
The issue is the amount of salt in the butter. Using unsalted butter allows you to add the specific amount called for in the recipe. If the recipe calls for 1/2 tsp salt and unsalted butter (for instance) and you put in 1/2 tsp salt but use salted butter, you are adding more salt than is called for which can affect the texture and taste of the cookie. I always, always use unsalted butter in all my baking.
I was out of UNsalted butter and had to make a cake, so i made my imbc with regular butter. my icing was very salty so i learned not to use salted butter but to way and go buy unsalted butter ,you CAN tell the difference .it ended up in the garbage can ......just sharing
lindav76,
Your post interested me, as some decorators add salt to their frosting to cut the perception of sweetness.
I usually use salted butter, because it's readily available at the Sam's Club. And because I can't really tell any difference between a recipe using salted vs. unsalted butter.
Guess I have very dull taste buds 
However, after reading this article, it may be that the Sam's Club butter isn't heavily salted:
http://www.ochef.com/553.htm
I believe that it very seldom makes any difference at all. I'm cheap. I use regular, salted butter because it's cheaper.
You CAN always taste before you add the salt in a recipe. Use say, half the salt and taste it; add more if you want to. Trust your taste buds.
Remember - Cooking is an art, based on a science.
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