You can have this in mind when you invite them for a meal; you could first ask what they would feel comfortable eating or would like to try. Be patient as they learn the local language and customs.
لِذٰلِكَ حِينَ تَدْعُوهُمْ إِلَى وَجْبَةِ طَعَامٍ ،‏ يُمْكِنُكَ أَنْ تَسْأَلَهُمْ أَوَّلًا هَلْ يُحِبُّونَ تَذَوُّقَ أَكْلَةٍ جَدِيدَةٍ أَوْ هَلْ مِنْ أَطْعِمَةٍ لَا يُفَضِّلُونَ تَنَاوُلَهَا .‏