Love Lives on the Seventh Cloud

On her birthday, Mom asked for a lot of love as a gift - and nothing more. But where can you get it? You can't buy it at a kiosk, and drawing it doesn't work. And in general, how do you understand what color love is? And why does Mom say that there is plenty of love even in a regular sandwich, while Grandpa insists that it is hidden in Grandma's hands?