The use of freeze dried raspberry powder is interesting.
Freeze dried raspberries are available from health food shops or specialist suppliers like MSK http://www.msk-ingredients.com/ or SOSA http://www.sosa.cat/?lang=en
"Modernist Cuisine" is the mighty work of Nathan Myhrvold and his team.
Nathan was one of the founders of Microsoft, and studied in Cambridge
Why do cooking and computing often go together?