The science behind the purple ube jam turning white (Rappler)

The Rappler (Philippines) wrote an article on yam jam and climate change. Data linking climate change specifically to ube (yam) production are scarce. But the indicators of the impact can be seen in some reports pertaining  to the change in rainfall pattern & mean temperature of the area. Agriculture, in general, is severely impacted by climate change. IFPRI has estimated that climate change will put “an additional 2 million people in the Philippines at risk of hunger by 2050 and cost about Php 145 billion annually over that time span” as it will affect food production in the country. Reaches 3M