Mame Gohan is Steamed Rice with green peas mixed in.  It is a classic spring-time rice dish when green peas are in season.  In many Mame Gohan recipes, fresh green peas are often cooked with rice at the same time, but cooking green peas separately from rice, and mixing in later, keeps the peas crisper and keeps their bright color which suits a more springy look.  Mame Gohan is nothing fancy, but it is eaten to cerebrate spring and to bring seasonal flavor to the table in Japan.