The Messenger of Allah ﷺ used to break his fast before praying with some fresh dates; but if there were no fresh dates, he had a few dry dates, and if there were no dry dates, he took some mouthfuls of water. (Using translation from Abū Dāʾūd 2356)
أَنَّهُ سَمِعَ أَنَسَ بْنَ مَالِكٍ يَقُولُ «كَانَ رَسُولُ اللَّهِ ﷺ يُفْطِرُ عَلَى رُطَبَاتٍ قَبْلَ أَنْ يُصَلِّيَ فَإِنْ لَمْ يَكُنْ رُطَبَاتٍ فَعَلَى تَمَرَاتٍ فَإِنْ لَمْ يَكُنْ تَمَرَاتٍ حَسَا حَسَوَاتٍ مِنْ مَاءٍ»