There is no difficulty in growing vegetables in Malaysia unless you're trying to plant temperate vegetables/flowers in a tropical country.
Cucumber can grow in both temperate and tropical area.
And you don't need to be in "cool" places to plant vegetables. Local vegetables like the sawi grows well in the plains. It depends on the soil they grow on, actually. If you are rich enough, you can have a glass house with air-conditioning...
Other than those, it would be great to have tapioca shoots eaten with "sambal" or some kerapu pucuk paku (green fern salad) or simple "sabong" leaves (Gnetum gnemon
) either cooked just like that or with smoked fish or with coconut milk... bamboo shoots... lemidin
Tapioca shoots are best eaten blanch as it contains small amount of cyanide.