Fat from black soldier fly larvae is a "sustainable and healthy alternative to butter," according to scientists at Ghent University in Belgium. According their research though, you can't go with more than half bug butter before it starts to taste suspect or downright foul. From Ghent University:
"The ecological footprint of an insect is much smaller compared to animal-based food sources" said researcher Daylan Tzompa-Sosa (Ghent University). "Besides, we can grow insects in large quantities in Europe, which also reduces the footprint of transport. After all, palm fat is often imported from outside of Europe…"
"Insect fat is a different type of fat than butter" researcher Tzompa-Sosa explains. "Insect fat contains lauric acid, which provides positive nutritional attributes since it is more digestible than butter. Moreover, lauric acid has an antibacterial, antimicrobial and antimycotic effect. This means that it is able, for example, to eliminate harmless various viruses, bacteria or even fungi in the body, allowing it to have a positive effect on health."
"Consumers' perception of bakery products with insect fat as partial butter replacement" (Food Quality and Preference)
"Scientists make cake with butter from bugs instead of cows" (Thomson Reuters/CBC)