Hypotheses about economic complements may not seem cause for a fight, but I have encountered what I can only call schools of thought:
4. A pinch of red chili powder
5. A quick swig of mineral water immediately afterwards
I advocate #4 and #5 only. Strawberries are too rich and too strong in flavor, if it be a fruit I nominate a few bites of a pluot or a few grapes for succulence, both in advance of the chocolate only.
You will find meditations on this topic, and others, in Clay Gordon’s inspiring Discover Chocolate: The Ultimate Guide to Buying, Tasting, and Enjoying Fine Chocolate.
Readers, will you either vote or amend this list?