Tales of Graces F

Miso Oden is probably the best one for this, but you get Miso rather late in the game. It activates when you have 50% or more Energy in your Mixer, gives ~94 EXP and heals 94% HP, though it does cost 129 Energy.

Miso Oden = Oden + Miso
Oden = Daikon(Radish?) + Egg

The hit activated ones are pretty easy to get too if monsters aren't dying too fast.

For the Eleth Mixer

Slots	EXP	Cumulative EXP
4	30
5	150	180
6	400	580
7	1000	1580
8	2000	3580
9	5000	8580
10	10000	18580
11	20000	38580
12	40000	78580
13	70000	148580
14	100000	248580
15	150000	398580
16	9000000	9398580

You get 2 EXP for each Use item you generate, and 5 EXP for each material you generate inside it as well.