Leek and Potato stir /fry

cLeek and Potato subzi (stir/fry)
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2 strands of leek chopped
2 potatoes cut into pieces
1 onion chopped
1 tbs cumin seed
1/2 tbs turmeric powder
1/2 tbs red pepper powder
1 tbs salt or as desired.
2 tbs canola oil
Method
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first heat oil in saucepan, now add cumin seed, let it pop up properly.
now add onions fry it for 2-3 mints till it becomes translusent.
now add turmeric powder,salt,red pepper powder.
add potatoes and leeks fry it for 5 mints.
cover and cook at low-med.
after 10 mints or so , check if its done,(if potatoes can be easily mashed by any spatula) the stir/fry is done .
sprinkle with chopped cilantro.

What type of flavor do leaks have? Are they fairly bland like a potatoe? I've heard they're a pain to clean.

AS for the flavor is concerned am not sure how to put in words but leeks are somewhat like green onions ,they r not bitter nor much sweet, yes its sometimes pain to clean it , cuz the soil particles r embedded into each layer of leaves of leek.
I generally cut leeks and wash throughly in water for 2-3 times. hope it helps u better.
and also leeks /onions belong to same group of familly, so kind of similar in flavor.

The description of the leek as similar in flavor to a green onion is helpful. I have heard that to make washing them easier you can submerge the halved section sin a bowl of water and the dirt will sink down to the bottom.