Beat butter and sugar until light and fluffy.
Add eggs and extract.
Add the flour, salt, powder at a low speed.
Remove 2 C. dough - set aside. (2/3 C. will be green and 1 1/3 will remain "white").
At low speed, beat in red paste.
Shape dough into a 3 1/2 inch cylinder.
Wrap with plastic wrap and refrigerate 2 hours.
Wrap green and plain dough separately and chill also.
Reshape red cylinder (so there are no flat sides).
Roll out plain dough to 7x8 1/2 rectangle.
Roll up around the red cylinder.
Roll out green dough to 10x7 1/2.
Wrap together and refrigerate for at least 8 hours.
Next day slice (cut thick!) and bake at 375 for 6-10 minutes.
Do NOT overbake!