Yup it'd be for the expobar mk 4. I'm currently using the original single hole tip but it takes (seemingly) years to do the job.
I've seen odd mentions of 2 and 4 hole, with the needs to increase boiler pressures, but all threads were deep in the archives somewhere. So I wondered what the latest ideas were as I would like to speed up the process.
Currently steam about 125ml of milk at a time in a 35cl motta jug. While I haven't timed it it must be bordering on a minute to do and I get mixed results.
So, it'd be good to hear what people are having success with.
P.s., hope all had an enjoyable Christmas.