I'll Be Seeing You by Suzanne Hayes and Loretta Nyhan

This is an epistolary novel, and it's very likely to appeal to folks who are also fans of The Postmistress by Sarah Blake and The Guernsey Literary and Potato Peel Pie Society.

Two women become pen pals because their husbands are overseas, serving in the Army and the Navy in World War II.

Glory is 24 and has only been married a few years.  She has a toddler and she's pregnant.  She lives in New England.

Rita is Italian, lives in Des Moines, and she's a little over 40.  Her husband is a professor and a biology researcher, and he volunteered even though, because of his age, he was too old to be drafted. Her son also volunteered and he's a sailor in the Pacific.  She's originally from Chicago.

The two women share their anxieties, frustration and loneliness.  Through letters, they grow close.

Under Rita's tutelage, Glory becomes a great gardener.  They comfort each other as they navigate tough family issues.

The story covers 1942 to 1945, and it's very eventful.  It's a heartwarming story of female friendship, and I enjoyed it.

And, the friends exchange recipes.  The first one is for beer bread (never heard of it before, but yes, you make it with beer).