Yes, it makes a difference. You can add a tablespoon of oil and 2 tablespoons of water to help make up the difference.
Yes. It doesn't make much of a difference.
Yes, you can substitute pumpkin with sweet potatoes. Just make your sweet potatoes are fully cooked so they are the proper consistency. If you do this, you probably won't be able to tell the difference once your bread is baked.
If the recipe calls for sweetener of any kind, decrease the amount of it u use
The middle of the sweet potato, at least a 1/4" from the skin.
Yes, but it will affect the taste of the recipe. Brown sugar is just sugar with molassass.
flan
Wouldn't recommend it. It'll add too much moisture to the recipe.
Sweet red bell peppers are usually used.
The only difference would be the amount of salt you would use in the recipe. If the recipe calls for unsalted butter and you're using salted, just decrease the amount of salt used in the recipe by a very small amount. If it calls for salted butter and you're using unsalted, then you increase the amount of salt by a very small amount. By small amount, that would be about 10% of the amount called for in the recipe.
Sweet bread.
Banana bread is most commonly classified as "sweet".
Not all Cuban bread is sweet. It is only sweet when you make it that way for using in bread pudding, desserts, and as a snack.