the pesto problem
flowchart TB
basil
i1["pine nuts"]
parmesan
garlic
i2["olive oil"]
intA
intB
pesto
blend>"blend"]
grate>"grate"]
mix>"mix"]
basil --> blend
garlic --> blend
i1 --> blend --> intA --> mix
parmesan --> grate --> intB --> mix
i2 --> mix
mix -- until mixed --> pesto