riddle - A recipe for lemon tea stew

Here's an old recipe I found in my tower for lemon tea stew.

Ingredients

6 cups of tea
4 eggs
2 eyeballs¹
2 leeks
4 lemons
1 banana
2 chicken wings

several dates
about half an onion

_{¹ Or fake jelly eyeballs for the squeamish.}

Instructions

Take a nice cup of tea,
Left to age well,
And mix in the first egg.

Double your portions of everything,
Toss in an eyeball for the witch,
Then the first leek, well chopped,

Simmer, and add the first lemon.

Throw in half a banana,
The roasted wing of a hen,
And add the first few dates.

Another cup of tea,
Having been left to age,
And the second lemon.

Double your portions all over again,
Chop nearly half of an onion,
And, after first roasting well,

Finally you have your food.

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If you put it all together the way it's supposed to be done, what do you get?

Answer

_{I should've realised, given that it was rand al'thor asking the question, that it would relate to a fantasy novel... :)}

Making this lemon tea stew will get you:

The Will and the Word (the term use for sorcery in the fantasy series, The Belgariad)

Nutrition information:

Take a nice cup of tea, => T
Left to age well, => H (sounds like "age")
And mix in the first egg. => E ("first" letter of "egg")

Double your portions of everything, => W ("double you[r]")
Toss in an eyeball for the witch, => I ("eye")
Then the first leek, well chopped, => L ("first" of "leek")
Simmer, and add the first lemon. => L ("first" of "lemon")

Throw in half a banana, => A (bAnAnA, A is half of the letters)
The roasted wing of a hen, => N ("wings" of "hen" are "h" and "n"... we'll just grab one)
And add the first few dates. => D ("first" of "dates")

Another cup of tea, => T
Having been left to age, => H
And the second lemon. => E ("second" letter of "lemon")

Double your portions all over again, => W

Chop nearly half of an onion, => O (OniOn, O is almost half of the letters)
And, after first roasting well, => R ("first" of "roasting")
Finally you have your food. => D ("final" of "food")