Answering the original question
It is strongly assumed but one has to be carefull as much as he can.

Answering to the WHAT is HALAAL
1]Halal in terms of Meat means
A)Allowed animals (Cow, Buffalo, Sheep, Lamb, Goat Camel, Chicken and perhaps some few more if i have missed)
B)The said should be slaughtered the Sharia way(*) and with Islamic Recitation (BismilLah wo Allah O Akbar).

(*) Sharia way: The cutting of the Vein in the middle inner neck and wait till blood flow out and then start the process (de skining and chopping cutting etc).

Note: The above animals if slaughtered WITHOUT the above mentioned process (Islamic recitation and Sharia way shall be deemed Non Halaal) or Haram.

2]Confectionary and bakery items, the elements like cheese/butter has to be from halaal sources (animals) and process of preparing and ingrediants....e.g Animal rennet should come from halaal way and etc

This is the best explaination i can assist with in this timeline and blog.

Hope this helps

Swine/Pork/Pig: Is HARAM regardless of the process of slaughter etc.