That’s the question. When cooking and then pouring the water into the sink, for 10 seconds the lights on the counter turn on. These lights are usually broken and refuse to turn on manually. The lights are a strip of little LED bulbs glued on the cupboard .
i have a theory but i am not an electrician
EDIT : case solved by GIGACHAD (that’s his nickname)
I have had problems with the drain plumbing downstream of my kitchen sink, because the heat causes the pipes to expand slightly and be longer. My theory is there is some loose wiring in the walls, and your drain pipes press on the loose wiring until they cool down again.