In this quest, you gather ingredients for the chef at Lumbridge Castle
Talk to the cook in kitchen. He requests three items: An egg, a bucket of milk, and some flour.
The egg is in the chicken farm to the north - east of Lumbridge.
Milk: Use a bucket on a cow to get milk. Bucket you can buy in General Shop or find in Chicken Farm house
Flour: Go to the windmill with wheat from one of the fields (near the egg farm) and bring one POT with you. At the top of the windmill is
a hopper. Use the wheat on the hopper, then operate the hopper. Go downstairs and use the pot on the flour.
Take all three ingredients to the chef and talk to him to finish the quest.
Reward: 1 quest point, cooking skill (+3[level 1-4]) and you have access to range in Lumbridge castle kitchen (additional cooking skill bonus when cooking there)