Hi,
Firefox has an addon where you can search a site, but you can also search this website with any browser by typing this into the search bar site:www.howmuchsugar.com with the word or phrase you want to search in front of it, eg dextrose site:www.howmuchsugar.com will bring up all references to dextrose or if you want to search for chocolate cake, type this in the search bar
"chocolate cake" site:www.howmuchsugar.com
I used the inverted commas so that it would actually search for chocolate cake, not, the word chocolate and the word cake.
Hope this helps