Make your own bearnaise in minutes with these mixes – just mix with butter and water. Bearnaise is commonly found with pizza in Sweden – we also recommend it with steak or salmon. Or pizza, of course – but that goes without saying, right? Ho to: Whisk the contents of one bag with 150ml water. Bring to aboil whilst stirring, and let simmer for 30 seconds. Remove from the heat and add 50g of butter (25g for a leaner sauce). Whisk until melted and serve.