In the meantime, in March 2017 the government announced that VAT is to be added to the cost of roaming in countries outside the EU. The result is that the cost of calls, texts and data is set to go up by 20%. At the time of writing, we don't know for sure when the charges will come into affect.
Bring to boiling. Add sweet potatoes. Cover the pan and cook sweet potatoes for 10 to 12 minutes or until just tender on the outside but resistant in the center when pierced with a knife. For soft, tender sweet potatoes, cook for 25 to 30 minutes.
Preparing potatoes on stove. when you add your potatoes. In a pot, heat water until it boils. Once it boils, add in your potatoes. After about 20 minutes, you can try forking in your potatoes to see how tender it is. Now, another factor on the length of cooking potatoes is how big your potatoes are. Of course, if you use really small potatoes, they will become tender easily.