Question:
Can an Ashkenazi use pots used for kitniyos that were put away for a whole year for Pesach?
Answer:
Yes he can, and there is no need to do hagalah on them. Even waiting 24 hours from when the kitnios were cooked in the pot is sufficient, and the pot may be used.
Sources:
Kaf Hachaim 453-26 in the name of Zera Emes, pri Chadash and others, Piskei Halachos (Pesach 10-6)