Avidah Lit'amah (Bitul and Blios #31 - Shulchan Aruch YD 98:8)

Milsah d'avidah lit'amah (מילתא דעבידא לטעמא): Basic halachos; D'oraisah or d'rabannan; Melach habaluah m'dam (מלח הבלוע מדם); Flavors; Kitnios. See seforim by Rabbi Cohen at www.kashrushalacha.com