# Minimum paragraph lineskip when flushing bottom

For my thesis, I have \documentclass[twoside]{book} along with \flushbottom to fill the page all the way to the bottom. However, on a number of pages the spacing between paragraphs is too small to my taste. I've tried using \setlength{\parskip}{1em} to force the paragraph spacing, but that obviously breaks \flushbottom. Is there a way to set a minimum parskip, while still allowing \flushbottom to stretch that value if needed?

• \setlength{\parskip}{1em plus 1em} ? – David Carlisle Feb 7 '18 at 14:16
• Nifty, I didn't know about that. Thanks – MPA Feb 7 '18 at 14:25

Defining \parskip with some expandable glue (but not contractable) will allow \flushbottom to be satisfied, but prevent the parskip from shrinking too small.
\documentclass[twoside]{book}