I learned these first important things while from using the amazing Jura espresso machines that also foam. I have a jura for each place I live. These recommendations are important for the Breville too.1. Use high protein milk. there is a brand "Fair Life" that has 13g of protein per serving. The amount of fat is not critical it's the amount of protein that's most important. However, skim is not good for great foam. 2% and whole work great. Fair Life is lactose free milk. I don't care about lactose one way or the other, this milk makes hands down the best foam ever!2. The fresher and colder the milk, the better. I check dates carefully.3. Detach wisk from foaming cup and immediately rinse both out in cold water after each batch. Quickly dry them with a clean towel, you're ready to go again. When I'm done making the number of batches I need (only 1 is need for lots of foam, enough for 3 maybe four drinks) I do the same thing but include a tiny amount of dish soap and lots of cold water for the clean after a first quick but thorough rinse. This takes seconds to do. NO need to put them in dishwashing machine. You can soak them in water with a tiny amount of vinegar if you like but you will find that if you have soft water and dry them immediately after cleaning, you won't likely ever actually need the vinegar soak. If you run the unit to get the milk really hot, you might get some caramelization or milk crusting on the inside of the cup, you should clean that up right away using cold and lukewarm water .... if you heat to 140 or less, which is plenty hot, and quickly clean after each batch, the crusting will not happen. Depending on how hot you run the foamer and/or how long you let the foaming cup sit with the remnants of milk in it, there is a chance you will have a tiny bit of milk crust in a groove of the wisk. In this case I soak the wisk in a mild vinegar and water mix. This is an irritant but considering the design of the wisk is an integral part of delivering great foam, I have reconciled myself to this slight nuisance.Depending on the milk itself, protein, temp and freshness, 8 0z of milk, using the cappuccino wisk (I recommend this wisk even for latte drinkers) heated at 138 to 140 degrees will take apps 2.5 minutes to heat and foam the milk. This 8 oz will fill a 20 oz container with foamed milk. I happen to use the minimum amount of milk appx 6 oz or so. This makes for some waste if you like a double double 12 oz latte but I can live with that.