لَكُمْ فِيهَا فَاكِهَةٌ كَثِيرَةٌTherein for you will be fruits in plenty,means, of all kinds. مِنْهَا تَأْكُلُونَof which you will eat.means, whatever you choose and desire.When food and drink are mentioned, fruit is also mentioned to complete the picture of blessing and joy. And Allah knows best