5 deserts in one week. Measures over 2 consecutive week-ends
 
Similar but instead of having "group A versus group B" everyone will receive a mix of the two powders... everyone with a different percentage! Everyone will receive at least 10% strawberry powder and at least 10% peach powder, without knowing what does is which.

After a few dozen persons finish the experiment, we will make mathematical regressions of results over the percentage of peaches (/strawberries) and see if we can have dose-response curves of the effects of strawberries and of peaches! We will publish the results here and email them to the participants.