Kitchadi is one of the main dish in Sadya.The important thing in making kitchadi is 'patcha kadugu' (Raw mustard) soaked and ground along with coconut.As it is a prominent dish in sadya lets see the recipe below.

Some Pointers about Sadya:


 Way of serving a Kerala sadya
Sadya is a traditional Kerala feast served on a clean green banana leaf. It is a sumptuous spread of rice and more than 14 delicious vegetable dishes, followed by different varieties of payasams. The dishes include parippu curry,sambar, rasam,olan, kalan, pachadi, kichadi, aviyal, and thoran.
Sadya is served in a very unique way. The banana leaf is placed before a person so that its narrow part always points to the left side. Sadya is served from the top left corner of the leaf, on which is placed in order, a small yellow banana, sarkara upperi, Upperi and papad. Then the mango pickle, injipuli (a thick ginger tamarind curry), lime pickle, thoran, olan, avial, pachadi,  kichadi, Erissery, Koottukary  and salt are placed in order on the rest of the upper half of the leaf.
Once all these items are placed, the rice is served at the bottom center of the leaf. First parippu is served. Then sambar and kalan (many places it will be already there in the leaf with the above list) are served in that order. Rasam is served after this.On completion of the meals, a variety of payasams, including pal payasam, are served.Palada Pradhaman is famous in north Kerala.  Then curd / buttermik is served at the end to complete the meal and to help digestion.
ANOTHER WAY....
The preparations for traditional onasadya or onam sadya begin well in advance. Pickles, ‘sarkara varatti’ and ‘upperi’ (banana chips) are made in advance. Some items like ingipuli and pachadi the day before Thiruonam. The number of vegetarian delicacies in an Onasadya today ranges from five to 12. Earlier it used be between 16 and 24 and in some traditional onam sadya it used be eight varieties of eight items that is a whopping 64. But nowadays the number of items is limited and non-vegetarian fare has also entered into the menu list.
Serving the onasadya is an art in itself. And eating the onasadya is an even bigger art. The traditional method of eating helps in digesting such a huge vegetarian fare.
Onasadya is served on banana leaves and it is laid on the table or ground and the narrow part of the leaf should always be on the left side.
Serving begins from the bottom left half of the leaf. In some areas a pinch of salt is kept on the leaf but some people avoid it.
  • On the bottom left half of the leaf a small banana is placed.
  • Next Pappadam (In some places later with the parippu curry)
  • Then sarkara varatti (jaggery coated banana chips) and upperi (banana chips)
  • Next from the top left half of the banana leaf ‘big lime curry’
  • then, pickle
  • Inchicurry or inchipuli
  • Thoran (dry vegetable with coconut)
  • Olan
  • Avial
  • Pachadi
  • Kichadi
Now the plantain leaf is filled with all the side dishes and most people will have dipped their fingers in some of the delicacies to have a taste.
  • The rice is served at the bottom center of the banana leaf.
  • First, parippu curry is served along with ghee.
  • Next rice is served with Sambhar.
  • Next Kalan or Rasam
  • Then comes the most anticipated part the Ada Pradaman (payasam or sweet).
The right way is to it on the banana leaf along with some small lime pickle. But sadly nowadays most people prefer it in cups.
Most people stop with the sweet but the traditional onasadya is not over yet.
Some people take some more rice along with puliseri or mooru (curry from curd).
The ways of serving differs in different areas and with different Hindu castes

Nutritional Info:

For 2 Oz:
Calories
18
Total Fat
1.3g
Sat. Fat
1.1g
Cholest.
0.6mg
Sodium
52.5mg
Carb.
1.4g
Fiber
0.3g
Sugars
0.8g
Protein
0.4g

Ingredients:

Vellarikai / Indian Cucumber / Dosakai - 2 cups diced finely(peeled)
Salt 
Curry Leaf - 1 sprig
Yogurt - 1/2 cup for mixing

For Grinding:

Coconut - 3/4 cup
Mustards Seeds - 1 tsp (soaked in water for 20 min)
Yogurt - 2 tbsp
Green Chilly - 1 or 2 (according to the spice level of your preference)


For Tadka:

Coconut Oil -1 tsp
Mustard Seeds - 1 tsp
Cumin Seeds - 1 tsp
Curry Leaf - 1 sprig
Red Chilly - 3 broken in halves.

Method:

1.Take a pan and add cut cucumber and add water and salt and let it cook.
 2.Once its 3/4 cooked add curry leaf and let it cook till the cucumber is soft.Switch off  the flame.Let it cool for 5 min.
 3.Add the ground mixture and mix well.

4.Add Extra Yogurt according to the thickness you need.

 5.MAke Tadka seperatly with coconut oil.

 6.Add it on top of the cucumber mixture and mix and serve.