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.
Directions. Place the potatoes in a large pot and fill to cover with cold water. Bring to a boil over high heat, add the salt, and turn the heat down to a simmer. Continue simmering until the potatoes are just fork-tender, about 8-10 minutes. Drain immediately and let steam, covered with a dishcloth, in a colander until completely tender and a fork can easily pierce the potato, about 15 minutes more. Let cool.