I personally would eat in the lounge. I'm not a big fan of Finnair's onboard breakfast but this is of course a matter of taste. You always get yogurt, fruits and selection of breads including croissants (usually tasteless and very dry). Warm food varies. Sometimes they have scrambled egg and sometimes omelette with sausage, hash browns and tomato sauce or sautéed spinach. Sounds good but the taste... not so good, in my opinion.