How do I reduce the acidity of homemade honey lemon juice? I usually use 1 lemon together with 2 spoon of honey and 500 ml of water. I note that as I increase the water content, the juice does not taste as good but I would like to reduce the acidity of my lemon. So, are there other ingredients that I can add such that the taste of my homemade honey lemon juice will not be affected?
You can neutralize the acidity of your drink by adding a half teaspoon of baking soda, but don't do this. Apart from fizzing up like a volcano, your lemon drink, or what is left of it, will taste pretty awful.

What you want to do is reduce the perceived acidity. This can be done simply by adding more honey. I suggest adding a teaspoon at a time until it tastes about right. I like about double the amount of honey you specified if we're talking teaspoons.