I use lager yeast the little freeze dried packets and they have an optimal performance range which is usually something like 10-15 degrees Celsius (50-60f). I converted an old fridge into a lager fridge with a brewing thermostat so tempreture control isn't an issue. Is it best to have it set as cold as the yeast is recommended? I generally put it mid way I.e. If it's 10-15 degrees I'll set my fridge to 12.5 degrees (54.5f).