The boy printed out the recipe... (read it while he was cooking)
...so that he could read it while he was cooking.
Sugar was mixed with chocolate... (taste sweeter)
...so that it would taste sweeter.
A US company printed a recipe... (people make chocolate at home)
...so that people could make chocolate at home.
We out all the ingredients on the table... (be easy to find them)
...so that it would be easy to find them.
Joseph Fry added new ingredients... (make a solid chocolate bar).
...so that he could make a solid chocolate bar.
They took the recipe back to Spain... (drink chocolate there).
...so that they could drink chocolate there.
The Aztec added spices to chocolate... (taste better).
...so that it would taste better.
Chocolate companies put caramel in chocolate... (have more variety).
...so that it would have more variety.
Chocolate was ground and heated... (be smooth and melt).
...so that it would be smooth and melt.