Among Spence’s findings so far:

People will rate the very same yogurt 15 percent tastier and more expensive when sampled with a silver spoon rather than a plastic spoon or a lighter (by weight) option.
Combining a heavier bowl with a heavier spoon will tend to make yogurt taste better.
Plastic packaging or plate ware that’s more rounded will tend to emphasize sweetness.
Angular plates tend to bring out the bitterness in food, which works well for dishes like dark chocolate or coffee-based desserts, Spence says.