Two very important points:-
1) Don't mistreat your house help. Even if she doesn't put 'exotic' ingredients in your food, she'll take it out on your kids - especially if they are very young and they can't report what was happening during the day!
NB: Observe how you kid acts around your house help. Is he/she jovial? If she's not, start investigations!
2) Your house help should NOT cook for you - unless it is an emergency! I know wazua ladies will kill me but if the house help cooks for your husband and you have no good reason - like you work 18 hours a day - you should be ashamed of yourself! And ladies wonder why house girls 'steal' their husbands. I have put steal in quotes because they are not stolen, you deliver them yourself - by your actions.
On a lighter note, Njung'e will say this brings a whole new meaning to the word 'dinner'. He he he. Today as you are having dinner, try not to think about 'dinner'!!!
Never count on making a good sale. Have the purchase price be so attractive that even a mediocre sale gives good returns.