ɔː

/jɔː(r)/

your

/wɔːm/

warm

/pɔːl/

Paul

/tɔːt/

taught

/tɔːk/

talk

/wɔːk/

walk

How do we produce /ɔː/?

It's a long vowel sound. You should round your lips more than in /ɒ/. Push your lips forward and keep the front of your tongue down. The back of your tongue goes up and your jaw goes down.