There is a common belief that one can reduce tummy fat by drinking honey and lemon juice mixed in warm water the first thing in the morning.
This questionable website, for example, makes this claim without citing research:
Fasting on honey and lemon-juice, an alkaline food, is highly beneficial in the treatment of obesity without the loss of energy and appetite. For this natural cure , mix one teaspoon of raw honey (unheated) with the juice of two teaspoons of lime or lemon juice in a glass of room temperature or lukewarm water (not boiling water!). Take this remedy as a wake-up drink once in the morning on a empty stomach.
Whereas this one refutes the claim, again without citations.