Eat a piece of toast.A Short Hike plays in real time so you'll either need to wait for 5 PM to roll around naturally or you can change your PS's system clock to show 5 PM. Once you're ready, head over to the Visitor's Center (Midwestern area of the island). Just by the building is a sign. Read the sign and take note of the message about "Strawberries at 5 PM". Speak with the Park Ranger and ask her about the Strawberries. You'll have a bit of bad luck and they'll be all out but for your troubles, she'll offer you a slice of toast. Open your inventory, select the Toast, then choose "eat". Once you've finished your small meal, the trophy will unlock.