If by your ignorance, you say your brothers sin by eating pork and clams and lobsters and chicken (all fowl in those days were strangled) then you are not without sin!
Romans 14
King James Version
14 Him that is weak in the faith receive ye, but not to doubtful disputations.
2 For one believeth that he may eat all things: another, who is weak, eateth herbs.
3 Let not him that eateth despise him that eateth not; and let not him which eateth not judge him that eateth: for God hath received him.
4 Who art thou that judgest another man's servant? to his own master he standeth or falleth. Yea, he shall be holden up: for God is able to make him stand.
1 Corinthians 10:24-26
King James Version
24 Let no man seek his own, but every man another's wealth.
25 Whatsoever is sold in the shambles, that eat, asking no question for conscience sake:
26 For the earth is the Lord's, and the fulness thereof.
The shambles were the meat markets of the day! Much of the meat they got was from the temples to idols! Much of that meat was red meat and still bloody!
I guess you think Paul a sinner as well.
Ironic that you refer to my ignorance when talking about butchering animals--to this day, the only air breathing animals that I know that don't get strangled are fowl, they get their heads cut of, or heads wrung off, but never, have I ever heard of fowl be strangled to death as part of any slaughterhouse process. --not only would a procedure like that be completely unnecessary to kill such small animals, but it would be difficult to perform, especially on mass, nor would it be profitable, to anyone, at anytime. --the irony of what you just said is almost incredible to me...
Strangulation of large animals, is a method of killing that requires a lot less skill--just get a rope around it's head, and tense it up, and wait. Not only is this method obviously cruel, but more importantly, it is against what God commands.
Concerning red meat: it's not red because of blood, but because of kind: red meat is red due to myoglobin (a type of muscle protein), not hemoglobin is a protein found in blood, not muscle. There are different kinds of flesh, some flesh is red, while others are white, etc.
Concerning conscience: we are not supposed to ask, cause idols are nothing, but if informed, we cannot eat, specifically for conscience, not ours, but theirs.
Meat sacrificed to idols is an abomination, period.
Please understand, that the idol cannot make the meat unclean, for an idol is nothing, yet, if we seek to eat that kind of meat, presumptuously, against what God commands, then indeed, we sin, and mortally.