Pressure cook the Avrekaalu/hyacinth beans with 1 cup water for 2 whistles with little salt until it gets tender and cooked.
Heat oil + ghee in a pan/ Kadai. Add in mustard seeds, urad dal and chana dal. When mustard seed splutters, Keep the stove on medium flame and add red chilli.
When the dal turns brown add in curry leaves, chopped ginger, chopped green chillies and chopped onion.Fry until onion turns translucent.
Add rice Rava and roast for 2-3 mins, it does not need to change its colour...just aromatic is enough.
Add 2 cup hot boiled water , cooked avarekalu along with water ( around 1/2 cup water ) and salt. Mix well.
total around 2.5-3 cup water for 1 cup rice rava.
Close the lid and allow it to cook for 5-6 minutes under low medium flame until all water is absorbed and rice rava is cooked.
Add grated coconut, lemon juice and coriander leaves at the end and give a nice stir.
Serve avarekalu akki tari uppittu hot as such or with Pickle /Thokku /chutney pudi.
Notes
You can follow the same recipe and replace rice Rava with normal sooji or bansi rava and make regular upma. You can increase the water quantity to 2 1/2 cups if you want a soft upma.
I have used 1:2.5 cup rice rava : water ratio ..
Avarekalu could be replaced with frozen peas / fresh peas.