[Finland] Food and restaurants recommendations in Helsinki ?

Thanks!

Some research so far:

I would really like to try sapas from Juuri for sure.

I have heard a lot of recommendations on Cafe Regatta. I don’t know if it’s far from the city centre.

Other places:
Food market, I have been thinking of visiting either one of these places:
Vanha kauppahalli (Old Market Hall)
Hietalahden kauppahalli (Hietalahti Market Hall)

Food I would like to try:
Lohikeitto (salmon soup)
Grillimakkara (grilled sausages)
Karjalanpiirakka (rice pies)
Korvapuusti (cinnamon and cardamon buns)
Riisipuuro (rice pudding)
Salmiakki (salty liquorice)