Estonian food draws heavily from German and Scandinavian cuisine. The closest thing to a national dish is verivorst, black pudding, served with mulgikapsad, which is basically sauerkraut stew.
Many types of food are close to Russian and have their equivalents almost exclusively in the former USSR, such as sour cream hapukoor, smetana in Russian, a sour 20%-fat milk dressing for salads, especially "kartulisalat" or "potato salad", which isn't that rare anywhere else either, really.
As Estonia used to be a food mass-production powerhouse in the times of the USSR, some of its foods, unknown to Westerners, are still well-recognized in the lands of the CIS.
Among other everyday food, some game products are offered in food stores in Estonia, mostly wild boar, elk sausages and deer grill. Some restaurants also offer bear meat.
For those with a sweet tooth, the national chocolate manufacturer is "Kalev", with many specialist stores around the country as well as supermarkets retailing the product.
The more adventurous may want to try "kohuke", a flavoured milk-curd sweet covered with chocolate and available at every supermarket.