It depends on what you are using it for. If you are making your own almond paste just substitute rose water for the almond extract.
No
No you can not
did you mean do all recipies use guava paste? well actually no because guava paste is a kind of liquid and not all recipies have liquid paste. guava paste is not like toothpaste its just like a liquid.
check it out! http://www.recipezaar.com/Guava-Paste-Guayabate-54036
Any other kind of nut could replace an almond.
No,you can not because it would ruin the entire dish if you are trying to make almond paste with almond butter.
Almond paste is a paste made from almonds and sugar with traces of beaten eggs, corn syrup, and heavy cream.
8 ounces of almond paste = 1.75 cups of almond paste http://www.practicallyedible.com/edible.nsf/pages/almondpaste
You can buy almond paste in nearly every chain grocery store in Washington State. Look for it with the baking products.
trare 7points in guava paste
Guava may be sweet or sour. Certain types can be substituted in recipes for Tomatoes as they provide a similar flavor and texture.
paste
Not at all; guava jelly is a jelly and guava paste is a paste. They are totally different; however, a popular combination is guava paste with a strip of guava jelly down the middle The jelly is a jelly; the paste is more or less a seriously dessicated finla product from a jam which has been really cooked down. (That's my experience with the making of both AND the eating of both.) Side point: on bread with cream cheese, spiced meat, and vin ordinare, you got major human food! As a child in Cuba, I used to have it for an afternoon snack on French bread with either cream cheese or Edam cheese. Yummy!
If the almond paste is already dried out, try breaking it up into small pieces and adding to a cookie recipe instead of the nuts you might put in.