http://home.howstuffworks.com/how-to-clean-furnishings3.htm
Tarnished stainless steel flatware can be cleaned with warm soapy water. For tougher stains immersing the flatware in boiling water will remove stains.
The flatware I have from Siam is from the 1940's and is made from brass with bone on the handle.
no
you use baking powder and coke
One suggestion is Lemon or Lemon rinds
I haven't seen vinegar clean jewelry but I saw my girlfriend clean my tarnished earrings with toothpaste. I was amazed.
Rubbing it gently with sodium bicarbonate.
Assuming you mean, are the words "clean those brass" adjectives, the answer is no, maybe, and yes Clean is a verb. Those is a demonstrative pronoun. (Some people might call this a form of adjective, as it is a modifier.) Brass is an adjective: a brass trumpet, a brass bookend. Note that brass is also a noun in some uses: the brass on that uniform is shiny, the brass in this orchestra is very good
I would not recommend using lemon juice or tamarind to clean flatware. Both are slightly acidic, and you should avoid contact with acids as much as possible. It might them look better temporarily, but in the end it will ruin the flatware.See the Web Links to the left for pages about how to clean flatware and silver.
The acid in the drink gets into the tarnished or the dirt particles and will clean it but you might have to leave it in for a few days.
It is tarnished, but not ruined. Clean/polish it as you would with a polishing cloth, or bring it to a jeweler. It will be fine.
Your the expert. If i knew how to clean it i wouldn;t be asking you.