Thanks... right on about chocolate however chocolate that is not as close to the pure nib, i.e., extra dark ... although delicious is neither good for your blood sugar or other organs ... so I guess some may be substituting the lighter for darker.
Trained with a French culinary background I can tell you that adding heavy cream to your dishes can be mouthwatering... that said, from a healthy eating perspective I have since eliminated all but trace elements of dairy from my diet and have never felt better. Regardless of the effects of heavy cream on your BS level you need remember both that dairy is terrible for your internal digestion ferments putrifies and does not combine well with other foods internally; additionally heavy cream is a heart and liver disease waiting to happen and diabetes is not the death of us but its complications are so therefore the food we eat should likewise be treated as things to heal and prevent rather than perpetuate illness.
I find that almond milk and complementary nut butters are good substitutes for what you are talking about. You can even make raw 'ice cream' using nuts, cocoa, water etc. if you miss such a treat.