Runeberg’s tart got it’s name from the finnish poet Johan Ludvig Runeberg (1804-1877) who, according to the legend, enjoyed the tart with punch on every breakfast. Runeberg’s tarts are typically eaten only in Finland on Runebers birthday on 5th of february. Popular legend tells that Runeberg’s wife, Fredrika, created the tart. Her recipe book from the 1850s has the tart’s recipe.
U can also look up the recipe on http://platyz.blogspot.com