So USGS’s geologists were open to questions.
Leading to the BBC’s best-ever headline: Don’t Toast Marshmallows on Hawaii volcano, says US government.
On the other hand, if you want to go to London with 499 of your closest friends (at the minimum), then you can have basaltic rock melted into your own personal steak-charring lava. With, afterwards, (honeymoon story alert) marshmallows.