Looking for a Japanese movie

Hello! I'm looking for a film and I remember only a few details about it. It's some Japanese movie about 4 women who leave together, it's food-themed film. It starts with some school girls who lay on an asphalt to hear a river beneath it (I don't remember it clearly) then some woman lays there too. The next thing I remember is how those women cook a meal for late dinner and then they eat and talk. Please help me find this movie. I'd appreciate any help. Thank you.